MOT Risk Index.co.uk

Audi TT — MOT statistics 2024

The Audi TT failed 24.18% of 113,561 first MOT attempts in 2024 ("first-time", excluding retests). Adjusted for the age of the fleet, its initial-failure ratio is 73.4 (100 = expected for its age profile). This car fails its MOT about 27% less often than expected for its age.

MOT risk index 73.4, 95% CI 72.7–74.2 (100 = national average) 100 73.4 0 200
Index
73.4
100 = age-normal
Raw fail rate
24.18%
n = 113,561
Dangerous /100
10
national ≈11
Diesel − petrol
-2.0 pp
fail-rate gap
Rank
204 of 761
lower index = better

Age-adjusted peer: BMW X5 (index 73.5) — the two published results are 0.1 index points apart.

Audi TT common problems: what actually fails the MOT

Suspension is well below the reference at 12.5 per 100 tests, against 19.3 per 100 tests across UK vehicles of the same ages.

higher bar = fails more oftenrate per 100 tests

Audi TT common problems: what actually fails the MOT — 2024 UK MOT data

family vs national — matched to UK vehicles of the same ages — top component groups, per 100 tests. Legend: This family · National avg. Combined labels: family / national average. A gap here reflects how these vehicles are driven, used and maintained as well as how they were built — an MOT defect is a test outcome, not a breakdown.

Component-group comparison table

Each ratio carries a 95% interval. With 6 groups compared here, roughly one apparent difference in twenty is chance alone.

GroupThis familyCases behind itUK, same agesFamily / national
Lamps & electrical15.9109,18322.60.70×0.70–0.71
Suspension12.585,69019.30.65×0.64–0.65
Brakes9.665,50914.60.66×0.65–0.66
Tyres8.961,1309.20.96×0.96–0.97
Body & structure7.954,2017.71.03×1.02–1.04
Visibility6.443,6639.10.70×0.69–0.71
Named defects — items per 100 initial tests, this family vs UK national average; this model measured on 685,663 tests, 2019-2024, national column 2024
What failedper 100 tests (this family)per 100 tests (UK average)ratio family / UKWhat to check
Transmission shaft constant velocity joint boot…A transmission shaft constant velocity joint boot severely deteriorated3.661.482.48×Ask the seller about: A transmission shaft constant velocity joint boot severely d
Transmission shaft constant velocity joint boot…A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc2.801.561.80×Ask the seller about: A transmission shaft constant velocity joint boot missing or
Suspension joint dust cover missing or no longer…A suspension joint dust cover missing or no longer prevents the ingress of dirt etc2.771.781.55×Listen for knocks over bumps — worn joints show up on the test
Lamp missing, inoperative or in the case of a…A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning2.632.091.26×Try every light and switch — lamps are a top failure
Tyre tread depth not in accordance with the…Tyre tread depth not in accordance with the requirements4.123.591.15×Check tyre tread depth across the full width
Spring or spring component fractured or seriously…A spring or spring component fractured or seriously weakened3.332.861.16×Ask the seller about: A spring or spring component fractured or seriously weakened
Windscreen or window damaged or seriously…Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view2.572.361.09×Check wipers, washers and windscreen chips in the driver's view
Tyre seriously damagedA tyre seriously damaged2.342.540.92×Check tyre tread depth across the full width
Aim of a headlamp is not within limits laid down…The aim of a headlamp is not within limits laid down in the requirements2.042.570.80×Try every light and switch — lamps are a top failure
Suspension pin, bush or joint excessively wornA suspension pin, bush or joint excessively worn2.994.870.61×Listen for knocks over bumps — worn joints show up on the test

Named defects ranked by how much more often they appear than the national average — not by raw rate.

Audi TT MOT advisories: what gets flagged

Tyres are highest at 39.6 per 100 tests; Body & structure are lowest at 3.1 per 100 tests — the gap is 36.5 per 100 tests.

higher bar = flagged more oftenadvisory items per 100 initial tests

Audi TT MOT advisories: what gets flagged — 2024 UK MOT data
Advisory rates table
GroupAdvisories per 100
Tyres39.6
Brakes33.9
Suspension27.4
Non-component advisories4.2
Emissions & leaks3.6
Body & structure3.1

Advisories are wear the tester noted but didn't fail — what will need money soon.

Tyres, brakes and suspension: Audi TT against cars of the same age

AgePartAudi TTSame age, petrol and dieselDifference
3 yearsTyres4.664.170.49
3 yearsBrakes0.521.77-1.25
3 yearsSuspension0.130.63-0.50
4 yearsTyres4.634.540.09
4 yearsBrakes0.92.43-1.53
4 yearsSuspension0.171.21-1.04
5 yearsTyres4.655.06-0.41
5 yearsBrakes1.213.09-1.88
5 yearsSuspension0.192.19-2.00
6 yearsTyres5.195.54-0.35
6 yearsBrakes1.553.81-2.26
6 yearsSuspension0.463.72-3.26
7 yearsTyres5.35.95-0.65
7 yearsBrakes1.914.55-2.64
7 yearsSuspension0.85.68-4.88
8 yearsTyres5.416.31-0.90
8 yearsBrakes2.265.38-3.12
8 yearsSuspension1.757.78-6.03

Failing items per 100 initial tests, 2019-2024. The comparison group is every petrol or diesel car tested at the same age, so weight and drivetrain show up rather than fleet age.

If a car like this fails, does it fail again?

A failure rate does not say whether a failure is a one-off or the start of something. This follows the same vehicles into their next ordinary MOT a year later — retests after a repair are excluded, because they follow a failure by definition. 2019-2024.

After this year's testFails next yearVehicles followed
It failed32.5%31,785
It passed19.8%388,237

A failed test raises next year's chance of failing again by 12.7 percentage points. The failure most likely to come back is body, chassis, structure — 35.4% of those vehicles fail again next year. Some of this is the vehicle and some is the owner: a car that was let go once tends to be let go again. One caveat: a car that fails may be sold or scrapped rather than tested again, so these figures describe the vehicles that came back.

Adjusted for how much these are actually driven

The headline index adjusts for the fleet's age. Wear, though, follows mileage: a three-year-old taxi and a three-year-old garage queen sit in the same age band. These two rows compare every car with vehicles of the same age, and then with vehicles of the same age and the same annual mileage, 2019-2024, on 682,502 tests. Both stand on the six-year corpus so they are measured on identical data — compare them with each other, not with the headline index above, which is measured on 2024 alone.

Standardised forIndexReading
Age only74.9fails less often than expected
Age and annual mileage76.0fails less often than vehicles driven as much
Share doing under 3,000 miles a year5.9%a normal spread of use

Mileage changes little here (+1.1 points): this fleet is driven about as much as the vehicles it is compared with. One limit to keep in mind: mileage is partly a result of how often a car breaks down — one that spends weeks in the workshop covers fewer miles — so the mileage-matched figure can understate a real weakness. Tests with no usable odometer reading are left out of it.

How the Audi TT compares with cars of its own age and size

Not against the whole fleet — against cars of the same size class tested at the same age, 2019-2024.

AgeAudi TTSame class, same ageDifferenceTests
3 years8.52%11.72%-3.2 pp34,181
4 years8.79%13.34%-4.55 pp37,721
5 years9.36%15.12%-5.76 pp38,308
6 years10.82%17.41%-6.59 pp40,127
7 years12.06%20.25%-8.19 pp41,618
8 years13.77%23.34%-9.57 pp40,539
9 years15.88%26.88%-11 pp37,935
10 years19.62%30.18%-10.56 pp35,663
11 years22.3%33.64%-11.34 pp39,444
12 years26.09%36.65%-10.56 pp41,530
13 years29.2%39.06%-9.86 pp38,960
14 years32.57%40.99%-8.42 pp36,852
15 years34.86%42.46%-7.6 pp36,085
16 years38.49%43.25%-4.76 pp36,005
17 years41.5%43.57%-2.07 pp34,311
18 years43.39%43.64%-0.25 pp30,030
19 years43.67%43.17%+0.5 pp28,296
20 years43.22%42.39%+0.83 pp23,000

Raw first-time failure rates within each age, so fleet age cannot flatter either side. A positive difference means this model fails more often than its own class at that age.

How does the Audi TT perform as it gets older?

The TT at age 12 is well below the reference at 19.8%, against 35.7% for all vehicles of the same age.

higher = larger sharecompare shares in percentage points

How does the Audi TT perform as it gets older? — 2024 UK MOT data

Chart axes: car age, years · failure-rate scale 0–47%.

Takeaway: a 10-year-old TT has roughly a 17% chance of failing its MOT.

Data table
AgeAudi TTAll vehiclesGap
39.7%12.4%-2.7 pp
49.0%13.1%-4.1 pp
59.0%15.1%-6.1 pp
610.3%17.5%-7.2 pp
711.6%20.2%-8.6 pp
812.6%23.3%-10.8 pp
914.3%26.5%-12.2 pp
1017.4%30.1%-12.7 pp
1117.5%33.2%-15.6 pp
1219.8%35.7%-15.9 pp
1324.6%38.2%-13.6 pp
1428.0%40.4%-12.4 pp
1527.9%41.6%-13.7 pp
1632.4%43.1%-10.7 pp
1734.0%43.1%-9.1 pp
1838.6%43.9%-5.3 pp
1940.4%43.5%-3.1 pp
2041.3%41.0%+0.3 pp

Is an Audi TT ULEZ compliant?

The share of classifiable 2024 Audi TT MOT tests likely ULEZ compliant by first-registration date is 68.5%.

Based on 113,181 classifiable initial MOT tests. This describes the tested fleet, not a specific car. MOT data do not record Euro class, so likely compliance is inferred from fuel and first-registration date. For the only authoritative answer, check the registration with TfL's official ULEZ checker.

higher = larger share likely compliantinferred from fuel and first-registration date; not a recorded Euro class

Age-band estimate from classifiable initial MOT tests
Vehicle age at testLikely ULEZ-compliant shareTests
Under 3 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 80
3–5 years100.0%
Check a registration with TfL
n = 10,297
6–7 years100.0%
Check a registration with TfL
n = 11,608
8 years100.0%
Check a registration with TfL
n = 9,217
9 years83.3%
Check a registration with TfL
n = 8,611
10–14 years65.2%
Check a registration with TfL
n = 28,587
15–17 years85.3%
Check a registration with TfL
n = 20,696
18 years99.9%
Check a registration with TfL
n = 2,854
19 years0.0%
Check a registration with TfL
n = 3,562
20+ years0.0%
Check a registration with TfL
n = 17,669

How dangerous are Audi TT MOT failures?

Major defects are well below the reference at 45.6 per 100 tests, against 52.8 per 100 tests nationally.

higher bar = fails more oftenrate per 100 tests

How dangerous are Audi TT MOT failures? — 2024 UK MOT data
Severity table
SeverityThis family /100National /100Family / national
Minor14.5814.221.03×
Major45.6252.750.86×
Dangerous9.8511.150.88×

Chart values: Minor 14.6 · Major 45.6 · Dangerous 9.8.

Per 100 tests on this family. National average: Minor 14.2 · Major 52.8 · Dangerous 11.2 per 100.

Does the month of an Audi TT MOT matter?

Jan is highest at 26.4%; Sep is lowest at 23.6% — the gap is 2.7 percentage points.

higher = larger sharecompare shares in percentage points

Does the month of an Audi TT MOT matter? — 2024 UK MOT data

Chart scale: 22%–33%.

bars: Audi TT · dashed: all class-4 cars

Month-by-month table
MonthAudi TTAll vehiclesGap
Jan26.35%31.12%-4.8 pp
Feb25.62%29.99%-4.4 pp
Mar23.82%28.26%-4.4 pp
Apr25.58%29.78%-4.2 pp
May25.03%28.79%-3.8 pp
Jun24.33%28.15%-3.8 pp
Jul25.06%29.33%-4.3 pp
Aug24.23%29.2%-5.0 pp
Sep23.63%28.19%-4.6 pp
Oct25.26%30.34%-5.1 pp
Nov26.22%30.58%-4.4 pp
Dec25.26%29.33%-4.1 pp

Takeaway: the spread between best and worst month is 2.7 percentage points — booking month barely matters for this family. Seasonality partly reflects registration-date clustering, not weather.

Before reading the shape: most of it is not about cars. Britain changes its registration plates twice a year, and 18.9% of these cars were first registered in March with another17.1% in September — 36% in two months against the 17% an even spread would give. An MOT falls due three years after first registration, so the buying calendar becomes the testing calendar. That shapes how many cars are tested each month — not how often they fail: the busiest months here are not the worst ones, so read the failure line on its own and the volume behind it separately.

Audi TT average mileage by age

At age 8, the middle half of TTs runs from 38,267 miles to 66,004 miles, against 51,199 miles as the median.

further right = more milesmedian is the typical car; band is p25–p75

Bars: Audi TT · dashed: all class-4 cars — 2024 UK MOT data

Chart axes: car age, years · odometer scale 0–141k mi.

Does high mileage mean more Audi TT MOT failures at the same age?

Within the same age group, split by odometer (2024 MOTs), so this separates wear from age: at ages 15+, 15.6% of those with under 40,000 miles failed first time versus 42.4% of those with over 140,000 miles.Inside this age group, higher mileage goes with more failures.

Does high mileage mean more Audi TT MOT failures at the same age? — 2024 UK MOT data
Audi TT: first-time failure by mileage within each age group (2024)
AgeOdometer% failing95% intervalTests
3–5<40k miles8.6%8–9.2%8,841
3–540-70k miles12.7%11.1–14.6%1,383
3–570-100k miles14.5%8.1–24.7%69 (rough estimate)
6–9<40k miles8.3%7.7–8.8%9,727
6–940-70k miles13%12.4–13.5%13,995
6–970-100k miles17.3%16.3–18.5%4,704
6–9100-140k miles23.6%21–26.5%906
6–9140k+ miles31.7%23.4–41.3%101 (rough estimate)
10–14<40k miles11%9.8–12.4%2,331
10–1440-70k miles17.9%17.1–18.7%8,972
10–1470-100k miles23.1%22.3–23.9%10,133
10–14100-140k miles27.9%26.8–29.1%5,840
10–14140k+ miles32.1%29.7–34.7%1,304
15+<40k miles15.6%13.7–17.8%1,177
15+40-70k miles26.8%25.6–28%5,664
15+70-100k miles34.7%33.9–35.6%12,976
15+100-140k miles40.2%39.5–41%17,750
15+140k+ miles42.4%41.2–43.5%7,131

line: median · band: middle half of the fleet (p25–p75)

Mileage by age (p25 / median / p75)
Agep25Medianp75Tests
312,29317,67024,3512,530
415,89022,95931,2133,093
520,12828,29738,3494,674
627,22137,06648,6884,149
732,11043,44056,4547,459
838,26751,19966,0049,217
943,97258,87475,9368,611
1048,60164,34581,4473,951
1152,80869,73589,1276,307
1258,43877,53696,9955,564
1365,11584,336106,5376,371
1470,26390,999115,1486,394
1574,96296,767119,4715,882
1678,699100,253123,0557,060
1782,023103,332126,3497,755
1882,936104,731127,2522,856
1976,78399,959123,2593,562
20+88,115110,519134,02017,673

A typical 8-year-old TT has ~51,199 miles on the clock. Much more — ask why; much less — check for gaps in the MOT history.

Where in Britain the Audi TT fails its MOT most

Llandrindod Wells area is highest at 35.6%; Bromley area is lowest at 19.5% — the gap is 16.2 percentage points.

higher = larger sharecompare shares in percentage points

Where in Britain the Audi TT fails its MOT most — 2024 UK MOT data
Toughest areas% failingvs model overall
Llandrindod Wells (LD)35.61%+10.6 pp
Kirkcaldy (KY)34.02%+9.0 pp
Plymouth (PL)33.97%+9.0 pp
Dorchester (DT)33.55%+8.5 pp
Exeter (EX)32.59%+7.6 pp
Easiest areas% failingvs model overall
Bromley (BR)19.46%-5.5 pp
St Albans (AL)19.94%-5.1 pp
Wakefield (WF)20.54%-4.5 pp
Enfield (EN)20.84%-4.2 pp
Dartford (DA)20.97%-4.0 pp

Why do areas differ?

For each external factor we correlate the area fail rate with the factor across postcode areas that have ≥800 tests of this family, then compare the bottom vs top fifth (quintile) of the factor. Correlation, not causation — factors travel together (the north is colder and often poorer; urban areas are denser and less salted). Road surface condition is joined now, for the 91 English areas the DfT publishes, and it explains nothing: the correlation with suspension failures is −0.01 and with body and structure failures 0.07. Potholes wreck wheels and tyres between tests, but by the time a car reaches the bay the road it drives on leaves no measurable trace.

In areas with the highest mot centre density this model fails 5.0 pp more often than in the lowest fifth (r=0.49, n=113 areas with ≥800 tests).

In areas with the highest urban share this model fails 4.6 pp less often than in the lowest fifth (r=-0.47, n=113 areas with ≥800 tests).

In the most coastal fifth of areas this model fails 3.7 pp more often than in the most inland fifth (r=-0.35, n=113 areas with ≥800 tests).

Audi TT Why do areas differ? — 2024 UK MOT data
Values shown in the quintile chart
FactorLow QHigh QGapCorrelation
MOT centre density22.4%27.4%+5.0 ppr=0.49
Urban share27.4%22.8%-4.6 ppr=-0.47
Distance to coast28.0%24.2%-3.8 ppr=-0.35

Factors that only mean something combined

Some conditions are useless on their own and informative multiplied together. Frost days alone say little — Britain barely freezes. Salt tonnage alone says little — it tracks frost. Distance to the sea alone says little. Multiply the first two and divide by the third and you get an index of how hard an area attacks a car's underside, and it lines up with the corrosion defects we actually record. We built five such combinations and tested each against our own data. Three survived; two did not, and the failures are listed here on purpose — a proxy that was never checked is decoration. One survivor only survived on the second attempt: built from a crude stand-in for street parking it failed outright, and rebuilt from the census — terraced streets carrying more cars than they have driveways — it works, and carries information the salt index does not.

Composite area indicators, each tested against a defect rate we measure
CompositeBuilt fromTested againstrVerdict
Underbody corrosionfrost days × salt load ÷ (distance to coast + 1)share of tests with a corrosion defect+0.42holds (116 areas)
Tyre wearrain days × annual miles ÷ age at first tyre advisoryshare of tests failing on tyres+0.45holds (116 areas)
Overnight corrosionterraced housing × cars per household × frost daysshare with a corrosion defect+0.41holds (102 areas) — and adds signal beyond the first index
Deferred maintenancedeprivation × advisory-to-failure conversion ÷ labour ratecars repeating the same advisory−0.26fails (118 areas)
Powertrain stressengine capacity ÷ kerb weightsuspension, brake and emissions failures−0.16fails (22 models)

The deprivation result is the one worth dwelling on. The intuition that poorer areas defer repairs is strong enough that most people treat it as established. We tested it twice — once on raw failure rates (r = 0.04) and again, more fairly, on whether an advisory turns into a failure — and it did not hold any of the three times we tried it — on raw failure rates, on advisory-to-failure conversion, and again with deprivation measured properly inside each nation rather than England alone. We are closing it. What does predict local failure rates is the density of test centres, which is a statement about testing, not about cars.

All external-factor correlations (machine-readable)
Factorrn areasLow-Q fail %High-Q fail %Gap ppLow-Q factorHigh-Q factor
MOT centre density (per 10k vehicles)0.49411322.427.4+5.058.5
Urban share (0–1)-0.47411327.422.8-4.60.41
Distance to coast (km)-0.35211328.024.2-3.76.279.5
Terrain gradient (% grade)0.2246724.627.2+2.60.53.7
Income deprivation (score)-0.1349724.323.6-0.70.10.2
Frost days (days/year)0.07211326.125.9-0.211.638
Road-salt proxy (g/m²-yr)0.06911325.025.8+0.7221.2670.1

Deprivation uses England IMD 2019 income score only (Scotland SIMD is a different scale). Salt proxy is a simplified NWSRG-style dry-salt sum from air Tmin; coastalness is distance from the area centroid to the nearest coastline.

Every dot is a postcode area — size = how many were tested there, colour = share failing. These figures are not age-adjusted: coastal and rural areas often run older fleets and salted roads, so higher raw fail rates do not automatically mean a worse local stock of this model.

Map labels: Scotland · N. England · Wales · London · S. West. Colour scale: 21%–32% failing.

Audi TT survival: which cars are still on the road

By age 19 is well below the reference at 73.1%, against 100.0% at the ages 4–6 reference level.

higher = larger sharecompare shares in percentage points

Audi TT survival: which cars are still on the road — 2024 UK MOT data

Chart axes: car age, years · survival vs ages 4–6 · scale 0–105%.

Survival vs fail rate by age
AgeTestsSurvival vs ages 4–6Fail %
334,18188.3%8.52%
437,72197.4%8.79%
538,30898.9%9.36%
640,127100%10.82%
741,618100%12.06%
840,539100%13.77%
937,93598%15.88%
1035,66392.1%19.62%
1139,444100%22.3%
1241,530100%26.09%
1338,960100%29.2%
1436,85295.2%32.57%
1536,08593.2%34.86%
1636,00593%38.49%
1734,31188.6%41.5%
1830,03077.6%43.39%
1928,29673.1%43.67%

By age 19, only about 73% as many cars of this family present for MOT as at ages 4–6 (reference n≈38,718); survivors still fail at 43.7% vs 8.8% at age 4. Older cars that still appear are a selected subset — weaker ones have already left.

How many miles does an Audi TT last?

100,000+ miles is highest at 27.2%; 200,000+ miles is lowest at 0.4% — the gap is 26.8 percentage points.

higher = larger sharecompare shares in percentage points

OdometerTests ≥ thresholdShare of sample
100,000+ miles185,40827.15%
150,000+ miles28,6734.2%
200,000+ miles2,3740.35%

Of 682,882 tests of this family with a usable odometer in 2024, 27.1% had reached 100k miles, 4.2% had reached 150k miles, 0.3% had reached 200k miles. This is a cross-section of cars still presenting for MOT, not a full birth cohort.

How many years is an Audi TT likely to last?

Bought at age 5 is highest at 13.7 years; Bought at age 15 is lowest at 4.1 years — the gap is 9.6 years.

bigger number = longer remaining lifeyears on the observed survival curve

Age nowTypical mileage (p50)Expected years left
5—at least 13.7
8—at least 10.6
10—at least 9.4
12—at least 6.7
15—at least 4.1

estimateEstimate only — not a warranty: a typical 10-year-old example of this family has at least 9.4 expected years of further MOT-present life. The curve is observed only until age 19, so the true figure is likely higher.

Audi TT faults that come together

Emissions & leaks + Seatbelts & SRS stand out at 6.75×, against 1.00× if the faults were independent.

above 1.0× = more than expectedbelow 1.0× = less

Group AGroup BTogetherLift
Noise, emissions and leaksSeat belts and supplementary restraint systems1,9036.75×
BrakesSpeedometer and speed limiter336.63× (rough estimate)
Noise, emissions and leaksSteering2,1636.18×
Noise, emissions and leaksRoad Wheels3296.15× (rough estimate)
Identification of the vehicleRoad Wheels365.9× (rough estimate)
Road WheelsSteering1285.74× (rough estimate)
Road WheelsSeat belts and supplementary restraint systems1035.73× (rough estimate)
Lamps, reflectors and electrical equipmentSpeedometer and speed limiter485.56× (rough estimate)
Speedometer and speed limiterSuspension415.31× (rough estimate)
Seat belts and supplementary restraint systemsSteering6195.27×
BrakesNoise, emissions and leaks7,0755.21×
BrakesSteering2,9325.18×
Body, chassis, structureSteering3,2855.13×
Body, chassis, structureNoise, emissions and leaks7,5604.93×
BrakesSeat belts and supplementary restraint systems2,2054.84×
Body, chassis, structureSpeedometer and speed limiter274.8× (rough estimate)
Lamps, reflectors and electrical equipmentSeat belts and supplementary restraint systems3,7064.69×
Lamps, reflectors and electrical equipmentNoise, emissions and leaks10,9134.63×
Lamps, reflectors and electrical equipmentSteering4,5314.61×
BrakesRoad Wheels3984.6× (rough estimate)
Identification of the vehicleSeat belts and supplementary restraint systems1474.57× (rough estimate)
Road WheelsTyres4184.45× (rough estimate)
SteeringSuspension3,9004.44×
Speedometer and speed limiterTyres244.44× (rough estimate)
Speedometer and speed limiterVisibility214.36× (rough estimate)
Lamps, reflectors and electrical equipmentRoad Wheels6334.22×
Identification of the vehicleNoise, emissions and leaks3904.07× (rough estimate)
Noise, emissions and leaksSuspension8,3373.96×
Body, chassis, structureSeat belts and supplementary restraint systems2,0303.94×
Road WheelsSuspension5253.91×
Seat belts and supplementary restraint systemsSuspension2,7193.85×
BrakesLamps, reflectors and electrical equipment14,5603.82×
BrakesSuspension12,9713.81×
Body, chassis, structureRoad Wheels3523.6× (rough estimate)
BrakesIdentification of the vehicle5533.57×
Body, chassis, structureLamps, reflectors and electrical equipment15,2663.55×
Body, chassis, structureBrakes8,8063.55×
Road WheelsVisibility2973.55× (rough estimate)
Identification of the vehicleLamps, reflectors and electrical equipment9403.5×
Body, chassis, structureSuspension13,3073.46×
Lamps, reflectors and electrical equipmentSuspension19,9483.38×
Identification of the vehicleSteering1273.18× (rough estimate)
Seat belts and supplementary restraint systemsTyres1,5543.14×
Noise, emissions and leaksVisibility4,1163.13×
Noise, emissions and leaksTyres4,5783.11×
Seat belts and supplementary restraint systemsVisibility1,3663.09×
Identification of the vehicleVisibility4633.09× (rough estimate)
BrakesTyres7,2313.03×
Identification of the vehicleSuspension7243.02×
Identification of the vehicleTyres4982.96× (rough estimate)
Lamps, reflectors and electrical equipmentVisibility10,8912.95×
BrakesVisibility5,9942.82×
SteeringTyres1,7312.82×
Body, chassis, structureIdentification of the vehicle4882.79× (rough estimate)
SteeringVisibility1,5162.77×
Lamps, reflectors and electrical equipmentTyres10,9662.65×
SuspensionVisibility8,2712.51×
Body, chassis, structureVisibility5,9202.46×
SuspensionTyres9,0382.44×
TyresVisibility5,5232.39×
Body, chassis, structureTyres6,0062.23×
Noise, emissions and leaksSpeedometer and speed limiter18too few (rough estimate)
Speedometer and speed limiterSteering16too few (rough estimate)
Seat belts and supplementary restraint systemsSpeedometer and speed limiter9too few (rough estimate)
Lamps, reflectors and electrical equipmentSeat belt installation check8too few (rough estimate)
Body, chassis, structureSeat belt installation check7too few (rough estimate)
Seat belt installation checkSuspension5too few (rough estimate)

Defects in «Noise, emissions and leaks» and «Seat belts and supplementary restraint systems» appear together 6.75× more often than chance (1,903 co-occurrences in the same test; lift≥1.3, n≥500).

Lift = how many times more often both groups appear on the same test than if independent. A pair is listed from 5 tests with both faults; the lift is shown from 20, and called above chance only when its 95% interval excludes 1 (see rough estimates).

Is low mileage better for an Audi TT?

Cars driven under 5,000 miles a year is well below the reference at 12.7%, against 22.6% for cars driven 8,000–12,000 miles a year.

higher = larger sharecompare shares in percentage points

BandFail %Tests
<5k miles/year12.73%93,294
8–12k miles/year22.58%106,451
Gap (low − normal)-9.85 pp—
By fuel and age

Diesel

AgeLow-use fail %nNormal fail %nGap pp
58.1596911.72,820-3.55 pp
69.531,23813.863,765-4.33 pp
79.11,47215.344,439-6.24 pp
810.071,52017.364,878-7.3 pp
910.621,51619.815,241-9.19 pp
1011.241,34323.945,138-12.7 pp
1115.161,28626.265,058-11.09 pp
1215.961,01528.254,113-12.29 pp
1318.4977930.43,306-11.91 pp
1421.857834.872,300-13.07 pp

Petrol

AgeLow-use fail %nNormal fail %nGap pp
56.129,93011.146,965-5.02 pp
66.749,25813.576,854-6.83 pp
77.429,03914.586,737-7.15 pp
88.958,19017.196,218-8.24 pp
910.097,18818.995,657-8.9 pp
1012.96,59824.395,134-11.49 pp
1114.127,49428.496,280-14.37 pp
1218.318,03832.877,616-14.55 pp
1321.17,76735.457,123-14.35 pp
1424.788,07639.036,802-14.26 pp

At matched ages 5–14, cars averaging under 5k miles/year fail at 12.7% vs 22.6% for 8–12k miles/year — 9.8 pp lower (n_low=93,294, n_normal=106,451). In this family low annual use is associated with fewer MOT fails, not more — the ‘garage queen’ penalty is not visible in overall fail rates. Diesel alone: 12.2% low-use vs 21.0% normal (-8.8 pp).

Which Audi TT engine is best?

diesel 1.8–2.0 is highest at 106.9; petrol over 2.0 is lowest at 90.3 — the gap is 16.6 points.

below 100 is betterabove 100 is worse100 = normal for this model at that age

Engine bands against this model's own failure rate at the same ages
FuelCapacityvs own age normRaw fail %Tests
petrolover 2.0 litre90.329.57%50,845
petrol1.8–2.0 litre94.719.12%279,423
diesel1.5–1.8 litre9923.89%293 (rough estimate)
petrol1.5–1.8 litre104.133.7%237,650
diesel1.8–2.0 litre106.919.31%116,834

Splitting this model by fuel alone hides the thing that actually differs. Within the same badge, the diesel 1.8–2.0 runs at 106.9 against this model's own age norm while the petrol over 2.0 runs at 90.3 — a spread of 16.6 points between two cars that share a name.

Read this one with more care than the rest of the page. Age is held constant, but who buys which engine is not: the largest capacity in a range is often a performance or executive variant that is garaged, cherished and lightly driven, while the smallest is frequently a fleet or entry car worked hard from new. The gap below is real in the test records; how much of it is the engine and how much is the owner, this data cannot separate. Bands under 100 tests are not shown; bands under 5,000 tests are rough estimates.

Best year for an Audi TT, and the years to avoid

Build year 2020 is highest at 106.9; Build year 2012 is lowest at 88.9 — the gap is 18.0 points.

below 100 is betterabove 100 is worse100 = normal for this model at that age

build year vs the same model at the same age · 100 = as expected

Audi TT build year vs the same model at the same age · 100 = as expected — 2024 UK MOT data
Audi TT by build year, tests 2019–2024. Below 100 is better than the model's own age norm.
Every build year with its confidence interval
Build yearvs own age norm95% CIRaw fail %TestsVerdict
2020106.998.1–115.88.97%6,211no different
201995.489.9–100.98.21%14,061no different
201897.292.3–102.18.87%16,957no different
201792.589.5–95.68.94%39,461better
201698.495.9–10110.31%56,257no different
2015100.698.1–103.211.76%52,216no different
201499.996.5–103.413.45%23,948no different
201391.989.4–94.314.32%38,273better
201288.986.5–91.216.07%34,042better
201194.292.1–96.319.69%39,174better
2010100.998.9–10324.22%39,522no different
2009100.198.1–10227.14%37,413no different
200898.696.9–100.329.81%45,179no different
20079795.5–98.532.42%50,548better
2006106.1103.7–108.538.41%19,594worse
2005105.9103.8–107.940.95%24,875worse
2004102.5100.8–104.241.59%33,409worse
2003102.9101.2–104.543.42%35,630worse
2002105.2103.5–106.945.4%32,957worse
2001103.5101.4–105.545.41%21,209worse
2000101.698.8–104.444.9%11,369no different
199999.292.7–105.644.34%2,032no different

The best build year here is 2012 and the weakest is 2006. Comparing build years sounds simple and is not: within a single year of testing, a car's build year and its age are the same number, so a naive comparison of years is a comparison of ages wearing a disguise. Each year below is measured against the same model at the same age in other cohorts, across six years of testing — 11 of 22 years come out distinguishable from their own model's age norm.

Two limits worth knowing before you act on this. Age, test year and build year are locked together by arithmetic, so the test-year effect is taken from the observed national failure level of each year rather than estimated — it is an adjustment, not a solution.

Audi TT MOT repair costs

The MOT-failure repair budget per test runs from £67.17 to £127.62, against £54.85 for the test itself.

bigger number = costs morepounds per test, MOT-failing faults only

MOT repairs, budget
£67–128
per test, repairs only
The test itself
£54.85
statutory cap, unchanged since 2010
How the figure is built: chance of failing × typical price of that repair
ComponentFails per 100 testsTypical repairIts priceContribution
Suspension12.5 (nat. 15.36)Suspension coil spring (single corner)£180£22.50
Lamps, reflectors and electrical equipment15.9 (nat. 18.09)Battery replacement (standard 12V lead-acid)£140£22.26
Brakes9.6 (nat. 11.25)Front brake pads (parts + labour, typical hatchback)£150£14.40
Tyres8.9 (nat. 8.7)Tyre (single mid-range 16" fitted)£90£8.01

Multiply how often each component fails on this model by what that repair usually costs, and you get the amount an owner should expect to budget per test for MOT-failing faults only — roughly £67 to £128, on top of the test fee itself. It is a budgeting figure, not a quote: the spread between a set of pads and a set of discs is most of the range.

Prices are modal quotes from a hand-kept catalogue of published UK garage guides — we do not scrape the booking sites, their terms forbid it, so this list is short and updated by hand with a source and date against each line. Each line prices one typical repair in that group, not a full remedy, and only groups our catalogue actually covers are counted. The contrast worth noticing is the second card: the legal maximum for the test has been £54.85 since 2010, while the repairs it uncovers have followed inflation the whole time.

For scale from a different direction: Warrantywise, which sees used-car warranty claims rather than test failures, puts the average claim at £2,052 across the ten highest-claim models it ranks and £539 for Honda, the lowest-claim make in its index (Warrantywise index 2026, 1.6 million claims, cars aged 3–15). Those sit an order of magnitude above the figures in this table, and the gap is the point: a warranty claim is a gearbox or an engine, which almost never fails an MOT, while the faults that do fail one are corrosion, lamps and tyres, which no warranty pays for. The two numbers answer different questions and neither replaces the other.

Audi TT running costs for a fleet

Vehicles failing at age 10 stand out at 17.0%, against 9.0% at age 5, tested in the same year.

higher = larger sharecompare shares in percentage points

Fails per 100 at age 5
9
vehicles needing work
At age 10
17
other cars of this model tested at age 10 in 2024
Repairs per 100
£6,717
plus £5,485 in test fees
Off the road
1d
median; 35.34% cleared same day
Failure rate and typical odometer by age
AgeFailsMedian odometerTestsGap vs age 5
39.72%17,6702,530+0.7 pp
48.99%22,9593,093-0.0 pp
59.01%28,2974,674+0.0 pp
610.34%37,0664,149+1.3 pp
711.57%43,4407,459+2.6 pp
812.57%51,1999,217+3.6 pp
914.32%58,8748,611+5.3 pp
1017.44%64,3453,951+8.4 pp
1117.52%69,7356,307+8.5 pp
1219.84%77,5365,564+10.8 pp
1324.6%84,3366,371+15.6 pp
1428.01%90,9996,394+19.0 pp
1527.85%96,7675,882+18.8 pp
1632.37%100,2537,060+23.4 pp
1734.02%103,3327,755+25.0 pp
1838.59%104,7312,856+29.6 pp
1940.4%99,9593,562+31.4 pp

The number a fleet manager needs is not the failure rate, it is the year the car starts costing more. Between cars aged 12 and cars aged 13, both tested in 2024, the failure rate of this model is 4.76 percentage points higher — the steepest one-year step in this cross-section of different cars, and a natural planning point for replacement.

Repair spend uses the same modal prices as the section above, so it inherits the same limits: one typical repair per component group, not a full remedy. Downtime is the gap between the failed test and the passed re-test, which is the window a vehicle is legally off the road.

Audi TT rust problems: where they corrode

Age-standardised corrosion susceptibility is well below the reference at 0.77×, against 1.00× for the national age-standardised rate.

above 1.0× = rusts more than averagebelow 1.0× = rusts less

How it rusts
0.77×
0.59% of tests record a corrosion defect vs 0.77% typical — age-standardised
Salt Belt exposure
53rd
percentile among the models published here, from its tests across 113 postcode areas

This Audi TT fails on corrosion at about the average rate once age is held constant, and its owners live in areas that are about typical for the models we publish. Both point the same way and reinforce each other: it resists corrosion even though its owners live in saltier areas than most.

Corrosion is the one failure mode that is as much about geography as about the car. We keep the two apart on purpose: a model can look rusty simply because it is popular in Scotland, and a model can look clean simply because it is bought in Surrey. Blending them into a single score would hide which of the two is doing the work.

Exposure is this model's tests weighted by an area corrosion index built from frost days, salt load and distance to the coast — the composite validated at r = 0.42 against corrosion defects we actually record. It is published as a rank, not a raw score, because every mainstream model skews towards low-corrosion areas for the simple reason that most of Britain's cars are in the south. Susceptibility is standardised to the national age profile, so an old fleet does not get labelled a rusty model.

Does an Audi TT advisory become a failure?

Lamps, reflectors and electrical equipment are highest at 27.3%; Road wheels are lowest at 1.2% — the gap is 26.1 percentage points.

higher = more likelypercentage is the observed transition probability

chance the same component fails at the next MOT, given an advisory now

Audi TT chance the same component fails at the next MOT, given an advisory now — 2024 UK MOT data
Audi TT, advisory → failure conversion by component group, chained tests 2019–2024. Chart labels and rates: Lamps & electrical 27.3% · Body & chassis 19% · Suspension 18.7% · Steering 13.8% · Brakes 11.3% · Noise, emissions, leaks 11% · Tyres 9.7% · Seat belts & restraints 3.8%.
Advisory today → failure at the next test, with how long you have
ComponentFails next timeTypical lead timeMiles of warningAdvisories tracked
Lamps, reflectors and electrical equipment27.3%12.1 months3,1127,856
Body, chassis, structure19.0%12.1 months3,30213,667
Suspension18.6%12.1 months3,32671,577
Steering13.8%12.1 months3,1514,381
Brakes11.3%12.1 months3,19699,166
Noise, emissions and leaks11.0%12.1 months3,42916,567
Tyres9.7%12.1 months4,570122,712
Seat belts and supplementary restraint systems3.8%12 months3,3901,305
Identification of the vehicle2.5%12.2 months3,8207,179
Road wheels1.2%12 months3,9432,072

This is the question an advisory note actually raises, and it needs six years of test history to answer. We followed the same vehicles from one MOT to the next across 2019–2024 and measured how often a component that was merely advised came back as a genuine failure at the next test.

Read it as a budgeting horizon, not a prophecy: the most likely component above turns into a failure for about 27 in 100 cars, and the median gap is 12.1 months and roughly 3,112 miles. The rest were repaired, sold, scrapped, or simply held. Rows with fewer than 500 tracked advisories are not shown.

What will fail next on an Audi TT?

Lamps, reflectors and electrical equipment after a failure at age 20+ are highest at 30.1%; Lamps, reflectors and electrical equipment after a passed at age <3 are lowest at 0.8% — the gap is 29.4 percentage points.

higher = more likelypercentage is the observed transition probability

Probability of each component failing at the next test, by age and last result
AgeLast testMost likely next failuresCars tracked
<3passedTyres 3.8% · Visibility 2.5% · Lamps, reflectors and electrical equipment 0.8%16,886
<3advisoryTyres 5.8% · Visibility 3.8% · Lamps, reflectors and electrical equipment 1.2%4,787
<3failureTyres 5.5% · Visibility 2.9% · Lamps, reflectors and electrical equipment 1.5%1,705
3-5passedTyres 3.9% · Visibility 2.7% · Lamps, reflectors and electrical equipment 1.6%63,527
3-5advisoryTyres 6.4% · Visibility 3.8% · Brakes 2.3%24,949
3-5failureTyres 7.0% · Visibility 4.1% · Lamps, reflectors and electrical equipment 3.1%9,258
6-8passedTyres 4.1% · Lamps, reflectors and electrical equipment 3.3% · Visibility 3.1%56,571
6-8advisoryTyres 7.1% · Visibility 4.8% · Lamps, reflectors and electrical equipment 4.4%26,289
6-8failureTyres 7.6% · Lamps, reflectors and electrical equipment 6.4% · Visibility 5.3%12,701
9-11passedSuspension 7.6% · Lamps, reflectors and electrical equipment 4.8% · Visibility 4.3%50,453
9-11advisorySuspension 10.1% · Tyres 7.4% · Lamps, reflectors and electrical equipment 6.8%25,504
9-11failureSuspension 11.6% · Lamps, reflectors and electrical equipment 9.3% · Visibility 7.9%20,949
12-14passedSuspension 11.6% · Lamps, reflectors and electrical equipment 8.4% · Body, chassis, structure 7.1%38,856
12-14advisorySuspension 15.2% · Lamps, reflectors and electrical equipment 11.2% · Body, chassis, structure 9.5%25,666
12-14failureSuspension 16.0% · Lamps, reflectors and electrical equipment 15.6% · Body, chassis, structure 11.4%29,555
15-19passedLamps, reflectors and electrical equipment 14.5% · Suspension 12.4% · Body, chassis, structure 11.7%35,099
15-19advisoryLamps, reflectors and electrical equipment 20.8% · Suspension 17.6% · Body, chassis, structure 16.5%35,338
15-19failureLamps, reflectors and electrical equipment 26.8% · Suspension 19.7% · Body, chassis, structure 18.1%50,463
20+passedLamps, reflectors and electrical equipment 15.3% · Body, chassis, structure 12.7% · Suspension 11.7%6,207
20+advisoryLamps, reflectors and electrical equipment 24.4% · Body, chassis, structure 17.5% · Suspension 16.1%7,614
20+failureLamps, reflectors and electrical equipment 30.1% · Body, chassis, structure 19.4% · Suspension 18.6%10,974

The same chains, cut differently: given a car's age and how its last test went, which component most often causes trouble at the following one.

The pattern that repeats across every family: a failure at one test roughly doubles the chance of a failure on the same component at the next one, and an advisory sits about half-way between a clean pass and a failure. Age bands in years; probabilities are per car, not per defect item.

Audi TT ownership: what six years of MOTs show

The ten-day re-test pass rate is highest at 60.4%; The later re-test pass rate is lowest at 4.3% — the gap is 56.2 percentage points.

higher = larger sharecompare shares in percentage points

Fixed same day
35.34%
of failures re-tested
Fails /10k miles
0.508
miles actually driven
Clean streaks
43.84%
3+ tests, nothing noted
Odometer anomaly
0.925%
reading went backwards

Failing is usually a same-week event, not a disaster. Of 128,666 failures followed through to their re-test, 35.34% were repaired and passed the same day and 60.42% within ten days; the median gap is 1 day. 317,538 defect items were cleared in the process.

Per mile driven, not per year. Dividing failures by the miles that actually went onto the odometers between consecutive tests gives 0.508 failures per 10,000 miles, on a median of 3,902 miles a year across 128,175 chains. This is the number to compare between models — an annual rate quietly rewards cars that barely leave the drive.

Two populations hide inside one model. 43.84% of these cars strung together three or more tests with nothing recorded at all, while 29.16% carried the same advisory three times or more — the same fault, noted, ignored, noted again. When you buy used you are buying one of those two histories, and the MOT record shows which.

Odometer anomalies: 0.925% of 128,290 chains show a reading lower than the previous test, with a median drop of 10,716 miles. We call this an anomaly and not fraud on purpose — instrument swaps, imports, unit mix-ups and keying errors all land in the same bucket. Obvious typos (drops under 100 miles or over 90% of the reading) are already excluded.

Audi TT safety recalls and how to check yours

DVSA recall campaigns stand out at 15.

bigger number = more recorded casescompare like-for-like scope, not sample size alone

recall campaigns launched per year

Audi TT recall campaigns launched per year — 2024 UK MOT data
Campaigns launched per year for the Audi TT. Source: DVSA vehicle safety recalls. Chart values: 2012: 0 · 2013: 0 · 2014: 0 · 2015: 0 · 2016: 0 · 2017: 0 · 2018: 0 · 2019: 0 · 2020: 2 · 2021: 2 · 2022: 1 · 2023: 2 · 2024: 0 · 2025: 1 · 2026: 2.
Most recent safety recall campaigns for the Audi TT
ReferenceLaunchedVehiclesConcern
R/2026/08925/02/202620,481Replacing Takata driver airbag
R/2026/08925/02/202621Replacing Takata driver airbag
R/2025/38708/08/20251Stop-drive TAKATA PSAN
R/2023/25825/08/2023580On affected vehicles it is possible the guide channel for the front passenger's airbag may
R/2023/05401/02/202320If a front airbag is deployed it is possible that the gas generator housing in which the p
All 15 campaigns
ReferenceLaunchedBuild datesVehiclesConcern
R/2026/08925/02/202617/09/2014 – 23/01/201720,481Replacing Takata driver airbag
R/2026/08925/02/202602/06/2016 – 09/12/201621Replacing Takata driver airbag
R/2025/38708/08/202511/02/2015 – 11/02/20151Stop-drive TAKATA PSAN
R/2023/25825/08/202318/02/2023 – 10/05/2023580On affected vehicles it is possible the guide channel for the front passenger's airbag may
R/2023/05401/02/202327/10/2014 – 09/12/201620If a front airbag is deployed it is possible that the gas generator housing in which the p
R/2022/07322/03/202223/11/2020 – 10/03/20221,762THE DESIGN TRIM ON THE POWER UNIT CAN BECOME DETACHED FROM ITS RETAINERS
R/2021/33022/09/202110/01/2000 – 13/08/20019,536FUNCTION OF THE DRIVER AIRBAG MIGHT BE RESTRICTED DUE TO ITS AGE
R/2021/23422/09/202114/04/1997 – 23/12/199957,169THE DEPLOYMENT OF THE TAKATA AIRBAG MAY BE DELAYED OR INSUFFICIENTLY POWERFUL DUE TO A POT
R/2020/30427/10/202019/02/2020 – 04/03/20203CURTAIN AIRBAG MIGHT NOT PROVIDE INTENDED PROTECTION IN AN ACCIDENT
R/2020/08725/03/202029/04/2014 – 24/05/201911,950IN THE EVENT OF AN ACCIDENT THE FUEL TANK COULD BE DAMAGED AND LEAK
R/2009/11214/12/200901/09/2008 – 31/08/20091,454CLUTCH MAY OPERATE INADVERTENTLY WITH UNEXPECTED LOSS OF DRIVE.
R/2009/08631/07/200920/05/2009 – 30/07/2009123BRAKING PERFORMANCE MAY BE AFFECTED
R/2008/02731/03/200805/01/2007 – 20/02/2007286TRIM MAY COME LOOSE IN A COLLISON CAUSING INJURY
R/2002/14326/10/2002541AIRBAG MAY NOT DEPLOY
R/2000/00817/04/200001/09/1998 – 31/12/19993,101INSTABILITY AND LOSS OF DIRECTIONAL CONTROL COULD OCCUR

DVSA lists 15 safety recall campaigns for the Audi TT, covering roughly 107,028 vehicles in total. A recall is the manufacturer fixing a fault for free, so an open recall on your car costs nothing to clear.

Counter-intuitive, and measured on our own data: across the 25 families published here, more recalls go with a lower MOT Risk Index (r = −0.52). Heavily recalled models are not worse cars in the test bay — an active manufacturer removes the fault before it becomes an MOT failure.

Check whether a specific car has an outstanding recall — free, by registration — at DVSA's recall service. Source: DVSA vehicle safety recalls (check-vehicle-recalls.service.gov.uk), OGL.

Audi TT technical service bulletins: what dealers are told

US market, Audi TT, model year 2016 only. A count of bulletins, not a UK failure rate.

NHTSA manufacturer communications are 736.

bigger number = more recorded dealer communicationsnot affected vehicles or confirmed faults

These are the issues the manufacturer fixes quietly: service communications sent to dealers without a public recall campaign. They show what the service network has been told even when the issue never became news.

United States · NHTSA manufacturer communications

US technical service bulletins by communication year; leading subjects cover the full file
Communication yearBulletinsLeading subjects across all years
20132
  • Equipment (240)
  • Electrical system (149)
  • Other / uncategorised (62)
  • Air Bags (47)
  • Service Brakes (38)
  • Structure (38)
  • Suspension (37)
  • Engine and cooling (33)
201447
201575
201647
201737
201812
201970
202065
202160
202254
202375
202485
202562
202645

Caveat worth stating plainly: this is NHTSA data about US-specification cars. British cars sold under the same name often use different gearboxes, engines and equipment, so a bulletin may describe a component that was never fitted here. The file counts dealer communications, not affected vehicles or confirmed failures, and it cannot tell you whether an individual UK car has the issue. A communication can carry more than one subject tag, so topic counts do not have to add up to the total. Source: NHTSA Manufacturer Communications API (US-market vehicles; queried model years 2015-2022). Licence: U.S. Government work / public domain · retrieved 2026-09-25.

Audi TT owner complaints: what goes wrong

US market, Audi TT, model year 2016 only. A count of owner complaints, not a UK failure rate; NHTSA has no UK denominator.

Restraints stand out at 2.

bigger number = more recorded casescompare like-for-like scope, not sample size alone

Owner complaints (US) against actual MOT failures (UK) for the same component groups
ComponentComplaintsShareMOT fail items per 100MOT rankAgreement
Restraints2100.0%not in top 6—complained about, rarely an MOT failure

Two different populations answering two different questions: the MOT records what an inspector can measure once a year, the complaint file records what annoyed or frightened an owner on the road. A component high in one column and absent from the other is the interesting case — driver-assistance and electronics dominate complaints while almost never appearing as an MOT failure item.

What the reports actually say
THE TRIM ON BOTH SIDES OF THE FRONT SEATS IS LOOSE AND BROKEN, I AM CONCERNED THAT THE AIRBAG WON'T DEPLOY PROPERLY IF NOT ADDRESSED BY AUDI. THE DEALERSHIP WANTS $2700 TO FIX THIS ISSUE. I HAVE CONTACTED AUDI CUSTOMER CARE AND THEY HAVE ADVISED THAT IT IS CUSTOMER PAY DUE TO BEING OUTSIDE THE WARRANTY PERIOD.
NHTSA complaint, filed 08/18/2020 · AIR BAGS

US owners have filed 2 complaints about the equivalent Audi TT to the National Highway Traffic Safety Administration0. These are owner reports, not verified findings — but they are the only large public record of what drivers themselves notice, and they cover the years between MOT tests.

Caveat worth stating plainly: US-specification cars, self-selected reporters, no denominator — complaint counts scale with how many cars were sold there and how motivated owners are to file. The mechanical gap matters as much as the statistical one: American cars of the same name often carry different gearboxes, engines and equipment — automatics where Britain buys manuals — so a drivetrain complaint filed in Ohio may describe a part that was never fitted here. Read the ranking inside a model, not between models, and treat drivetrain entries with particular caution. Source: NHTSA ODI consumer complaints (US market, public domain) — US-spec vehicles, indicative only.

Audi TT inspection results in other countries

Norway PKK stands out at 46.4%, against 33.7% nationally.

higher = larger sharecompare shares in percentage points

Same model, different national inspection regimes
CountryTestThis model failsNational averagePositionSample
United KingdomMOT (class 4)24.18%26.01%-1.8 pp113,561
NetherlandsAPK50.6%50.8%-0.2 pp8,004
FinlandKatsastus21.8%26.3%-4.5 pp919
NorwayPKK46.4%33.7%+12.7 pp819

The countries disagree about this car, and that is worth saying out loud rather than averaging away. A model can sit above its national average in one country and below it in another because the fleets are not the same cars: different model years, different engines, different roads and salt, and inspection rules that weight components differently. Treat each row as evidence from one regime, not as a verdict.

The exact faults Netherlands records — APK defect codes, 2024
CodeFaultRecordedType
210Tyre pressure not at the correct value1,487failure
205Tyre with insufficient tread678failure
516Dipped headlight incorrectly aimed574failure
584Sidelight not working properly533failure
RA2Excessive leak of other fluids502advisory
AC1Tyre down to 1.6–2.5 mm of tread484advisory
178Driveshaft gaiter split, no longer sealing403failure
RA1Airbag or seat-belt warning light showing a fault387advisory

Worth dwelling on how mundane the top of that list is: tyre pressure, tread depth, headlight aim. The Dutch APK records 1.271 defects per inspection against a much higher national failure rate than Britain's, and the reason is not that Dutch cars are worse — it is that the two regimes draw the line between "note it" and "fail it" in different places. Codes are the RDW's own; the English wording here is our translation of the Dutch original.

Britain is not the only country that inspects every car every year, and the Audi TT is on the road in all of them. Each national regime writes its own rules, so the pass rates below are not comparable to each other — what does travel across a border is whether a model sits above or below its own country's average.

Rows with fewer than 500 inspections are not published. Sources: RDW open data — Meldingen Keuringsinstantie + Geconstateerde Gebreken + Gekentekende voertuigen (2024), CC0. Not an RDW endorsement.; Traficom — Periodic inspections of cars by model / by model and fault object 2024, CC BY 4.0; Statens vegvesen — Periodisk kjøretøykontroll (PKK) 2024, CC BY 4.0. Adapted; licences and full notice.

Audi TT MOT: quick answers

Audi TT MOT Risk Index is well below the reference at 73.4, against 100 for a car with the same age profile.

below 100 is betterabove 100 is worse100 = normal for this model at that age

What is the Audi TT first-time MOT pass rate?
75.82% of first attempts passed in 2024 (113,561 tests). This is the first-time figure: retests after repair are excluded. Basis: first-time, excluding retests.
Why does this number differ from other sites?
Other sites often report a pass rate that includes retests or counts all attempts. Our 24.18% figure is the first-time initial failure rate, using 113,561 primary tests as the denominator (first-time, excluding retests). The age-adjusted MOT initial-failure ratio 73.4 is shown separately because raw rates compare fleet age as well as cars.

Compare the Audi TT with other cars

BMW X5 is highest at 73.5; Audi A6 is lowest at 71.9 — the gap is 1.6 points.

below 100 is betterabove 100 is worse100 = normal for this model at that age

Same brand

All Audi MOT statisticsAudi A6 MOT statsAudi Q3 MOT stats

Similar risk

BMW X5 (index 73.5)Land Rover Range Rover Sport (index 72.5)Audi A6 (index 71.9)

Same size class

how Land Rover Defender compareshow Land Rover Discovery Sport compareshow Audi Q5 compares

By build year

Audi TT 1999Audi TT 2000Audi TT 2001Audi TT 2002Audi TT 2003Audi TT 2004Audi TT 2005Audi TT 2006Audi TT 2007Audi TT 2008Audi TT 2009Audi TT 2010Audi TT 2011Audi TT 2012Audi TT 2013Audi TT 2014Audi TT 2015Audi TT 2016Audi TT 2017Audi TT 2018Audi TT 2019Audi TT 2020

By area

Audi TT MOT failure rate by postcode area

By failure group

Audi TT body, chassis and structure failuresAudi TT brakes failuresAudi TT vehicle identification failuresAudi TT lamps, reflectors and electrics failuresAudi TT noise, emissions and leaks failuresAudi TT road wheels failuresAudi TT seat belts and airbags failuresAudi TT steering failuresAudi TT suspension failuresAudi TT tyres failuresAudi TT visibility failures

Inspections abroad

Audi TT in NorwayAudi TT in FinlandAudi TT in the Netherlands


Data details & how to cite

Scope: class-4 vehicles (cars), initial tests only, outcomes pass / fail / fixed-on-the-spot at the station (PRS counts towards the failure rate — the defect was present at arrival). Index = observed initial failures ÷ failures expected for this fleet's exact age profile, ×100; margin of error is a 95% confidence interval. Covers ALL generations together — a 3-year-old and a 15-year-old are very different cars; a generation split is on the roadmap. Dataset release dataset_release_id=dvsa-2024-v2, frozen baseline; headline claim_id=family-stats:audi-tt:dvsa-2024-v2. Full method: methodology.

Cite: MOT Risk Index (2026). Audi TT MOT statistics 2024 (data release dvsa-2024-v2; downloadable dataset motriskindex-families-2024-v5, doi:10.5281/zenodo.22975051). https://motriskindex.co.uk/cars/audi-tt/ · Published 2026-07-30.