MOT Risk Index.co.uk

Chevrolet Trax — MOT statistics 2024

The Chevrolet Trax failed 37.11% of 1,482 first MOT attempts in 2024 ("first-time", excluding retests). Adjusted for the age of the fleet, its initial-failure ratio is 115.7 (100 = expected for its age profile). This car fails its MOT about 16% more often than expected for its age. Small sample — treat with care.

MOT risk index 115.7, 95% CI 108.2–123.5 (100 = national average) 100 115.7 0 200
Index
115.7
100 = age-normal
Raw fail rate
37.11%
n = 1,482
Dangerous /100
9
national ≈11
Rank
610 of 761
lower index = better

Age-adjusted peer: DS DS7 (index 115.9) — the two published results are 0.2 index points apart.

Chevrolet Trax common problems: what actually fails the MOT

Suspension stands out at 21.9 per 100 tests, against 10.8 per 100 tests across UK vehicles of the same ages.

higher bar = fails more oftenrate per 100 tests

Chevrolet Trax 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, and 1 of these is already inside an interval that includes 1.00×.

GroupThis familyCases behind itUK, same agesFamily / national
Suspension21.92,03910.82.04×1.95–2.12
Lamps & electrical9.185011.40.79×0.74–0.85
Brakes8.27688.40.98×0.92–1.06 · not distinguishable
Visibility7.57016.61.14×1.06–1.23
Tyres6.76278.90.75×0.70–0.82
Steering3.93662.11.87×1.69–2.08
Named defects — items per 100 initial tests, this family vs UK national average; this model measured on 9,317 tests, 2019-2024, national column 2024
What failedper 100 tests (this family)per 100 tests (UK average)ratio family / UKWhat to check
Suspension joint dust cover missing or no longer…A suspension joint dust cover missing or no longer prevents the ingress of dirt etc7.021.783.93×Listen for knocks over bumps — worn joints show up on the test
Suspension joint dust cover severely deterioratedA suspension joint dust cover severely deteriorated5.851.903.07×Listen for knocks over bumps — worn joints show up on the test
Spring or spring component fractured or seriously…A spring or spring component fractured or seriously weakened4.642.861.62×Ask the seller about: A spring or spring component fractured or seriously weakened
Brake lining or pad worn below 1.5mma brake lining or pad worn below 1.5mm3.522.151.64×Feel for brake judder and pulling on the test drive
Wiper blade missing or obviously not clearing the…Wiper blade missing or obviously not clearing the windscreen2.772.221.25×Check wipers, washers and windscreen chips in the driver's view
Aim of a headlamp is not within limits laid down…The aim of a headlamp is not within limits laid down in the requirements2.322.570.90×Try every light and switch — lamps are a top failure
Rear registration plate lamp or light source…A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources2.302.830.81×Try every light and switch — lamps are a top failure
Windscreen or window damaged or seriously…Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view1.782.360.75×Check wipers, washers and windscreen chips in the driver's view
Tyre tread depth not in accordance with the…Tyre tread depth not in accordance with the requirements2.843.590.79×Check tyre tread depth across the full width
Suspension pin, bush or joint excessively wornA suspension pin, bush or joint excessively worn3.644.870.75×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.

Chevrolet Trax MOT advisories: what gets flagged

Tyres are highest at 41.4 per 100 tests; Body & structure are lowest at 3.9 per 100 tests — the gap is 37.5 per 100 tests.

higher bar = flagged more oftenadvisory items per 100 initial tests

Chevrolet Trax MOT advisories: what gets flagged — 2024 UK MOT data
Advisory rates table
GroupAdvisories per 100
Tyres41.4
Brakes26.9
Suspension16.8
Non-component advisories8.8
Emissions & leaks8.5
Body & structure3.9

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

Tyres, brakes and suspension: Chevrolet Trax against cars of the same age

AgePartChevrolet TraxSame age, petrol and dieselDifference
6 yearsTyres4.975.54-0.57
6 yearsBrakes4.283.810.47
6 yearsSuspension4.413.720.69
7 yearsTyres3.735.95-2.22
7 yearsBrakes5.094.550.54
7 yearsSuspension10.115.684.43
8 yearsTyres4.646.31-1.67
8 yearsBrakes5.345.38-0.04
8 yearsSuspension14.37.786.52

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 failed32.2%519
It passed27.0%5,499

A failed test raises next year's chance of failing again by 5.2 percentage points. The failure most likely to come back is suspension — 29.9% 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 9,288 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 only104.0fails more often than expected
Age and annual mileage104.2fails more often than vehicles driven as much
Share doing under 3,000 miles a year3.4%a normal spread of use

Mileage changes little here (+0.2 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 Chevrolet Trax 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.

AgeChevrolet TraxSame class, same ageDifferenceTests
5 years16.19%17.41%-1.23 pp556
6 years19.95%20.75%-0.8 pp1,589
7 years26.46%24.32%+2.14 pp1,553
8 years28.29%28.15%+0.14 pp1,573
9 years30.06%32.03%-1.96 pp1,540
10 years33.07%35.6%-2.53 pp1,506
11 years39.98%38.65%+1.33 pp973

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 Chevrolet Trax perform as it gets older?

The Trax at age 11 stands out at 40.0%, against 33.2% for all vehicles of the same age.

higher = larger sharecompare shares in percentage points

How does the Chevrolet Trax perform as it gets older? — 2024 UK MOT data

Chart axes: car age, years · failure-rate scale 0–43%.

Takeaway: a 10-year-old Trax has roughly a 31% chance of failing its MOT.

Data table
AgeChevrolet TraxAll vehiclesGap
1031.0%30.1%+0.9 pp
1140.0%33.2%+6.8 pp

Is a Chevrolet Trax ULEZ compliant?

The share of classifiable 2024 Chevrolet Trax MOT tests likely ULEZ compliant by first-registration date is 56.1%.

Based on 1,479 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 = 1
3–5 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 0
6–7 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 3
8 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 2
9 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 1
10–14 years55.8%
Check a registration with TfL
n = 1,472
15–17 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 0
18 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 0
19 yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 0
20+ yearsSuppressed — sample below publication threshold
Check a registration with TfL
n = 0

How dangerous are Chevrolet Trax MOT failures?

Major defects are well below the reference at 40.8 per 100 tests, against 52.8 per 100 tests nationally.

higher bar = fails more oftenrate per 100 tests

How dangerous are Chevrolet Trax MOT failures? — 2024 UK MOT data
Severity table
SeverityThis family /100National /100Family / national
Minor14.0414.220.99×
Major40.8352.750.77×
Dangerous8.8111.150.79×

Chart values: Minor 14.0 · Major 40.8 · Dangerous 8.8.

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

Does the month of a Chevrolet Trax MOT matter?

May is highest at 35.1%; Feb is lowest at 21.9% — the gap is 13.2 percentage points.

higher = larger sharecompare shares in percentage points

Does the month of a Chevrolet Trax MOT matter? — 2024 UK MOT data

Chart scale: 20%–37%.

bars: Chevrolet Trax · dashed: all class-4 cars

Month-by-month table
MonthChevrolet TraxAll vehiclesGap
Jan27.2%31.12%-3.9 pp
Feb21.85%29.99%-8.1 pp
Mar25.74%28.26%-2.5 pp
Apr32.04%29.78%+2.3 pp
May35.09%28.79%+6.3 pp
Jun31.57%28.15%+3.4 pp
Jul28.55%29.33%-0.8 pp
Aug29.34%29.2%+0.1 pp
Sep27.53%28.19%-0.7 pp
Oct28.3%30.34%-2.0 pp
Nov29.9%30.58%-0.7 pp
Dec28.62%29.33%-0.7 pp

Takeaway: the spread between best and worst month is 13.2 percentage points — noticeable seasonality. 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.

Chevrolet Trax average mileage by age

At age 11, the middle half of Trax models runs from 63,199 miles to 99,293 miles, against 80,063 miles as the median.

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

Does high mileage mean more Chevrolet Trax MOT failures at the same age?

Within the same age group, split by odometer (2024 MOTs), so this separates wear from age: at ages 10–14, 16.5% of those with under 40,000 miles failed first time versus 45.9% of those with 100,000–140,000 miles.Inside this age group, higher mileage goes with more failures.

Does high mileage mean more Chevrolet Trax MOT failures at the same age? — 2024 UK MOT data
Chevrolet Trax: first-time failure by mileage within each age group (2024)
AgeOdometer% failing95% intervalTests
10–14<40k miles16.5%10.6–24.9%103 (rough estimate)
10–1440-70k miles32%27.9–36.3%472 (rough estimate)
10–1470-100k miles38.6%34.7–42.7%572
10–14100-140k miles45.9%40.2–51.8%283 (rough estimate)

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

Mileage by age (p25 / median / p75)
Agep25Medianp75Tests
1056,55472,04291,192500
1163,19980,06399,293973

A typical 11-year-old Trax has ~80,063 miles on the clock. Much more — ask why; much less — check for gaps in the MOT history.

Where in Britain the Chevrolet Trax fails its MOT most

Northampton area is highest at 41.2%; Liverpool area is lowest at 15.7% — the gap is 25.5 percentage points.

higher = larger sharecompare shares in percentage points

Chevrolet Trax line: median · band: middle half of the fleet (p25–p75) — 2024 UK MOT data
Toughest areas% failingvs model overall
Northampton (NN)41.22%+13.1 pp
Motherwell (ML)38.61%+10.4 pp
Glasgow (G)38.46%+10.3 pp
Easiest areas% failingvs model overall
Liverpool (L)15.69%-12.5 pp
Coventry (CV)17%-11.2 pp
Bolton (BL)17.39%-10.8 pp
Southend-on-Sea (SS)20.97%-7.2 pp

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%–38% failing.

Chevrolet Trax survival: which cars are still on the road

By age 11 is well below the reference at 90.7%, against 100.0% at the ages 4–6 reference level.

higher = larger sharecompare shares in percentage points

Chevrolet Trax 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 %
555651.8%16.19%
61,589100%19.95%
71,553100%26.46%
81,573100%28.29%
91,540100%30.06%
101,506100%33.07%
1197390.7%39.98%

By age 11, only about 91% as many cars of this family present for MOT as at ages 4–6 (reference n≈1,072); survivors still fail at 40.0% vs 16.2% at age 5. Older cars that still appear are a selected subset — weaker ones have already left.

How many miles does a Chevrolet Trax last?

100,000+ miles stands out at 10.1%.

higher = larger sharecompare shares in percentage points

OdometerTests ≥ thresholdShare of sample
100,000+ miles93610.07%

Of 9,294 tests of this family with a usable odometer in 2024, 10.1% had reached 100k miles. This is a cross-section of cars still presenting for MOT, not a full birth cohort.

How many years is a Chevrolet Trax likely to last?

Bought at age 5 is highest at 11.9 years; Bought at age 10 is lowest at 1.4 years — the gap is 10.5 years.

bigger number = longer remaining lifeyears on the observed survival curve

Age nowTypical mileage (p50)Expected years left
5—at least 11.9
8—at least 3.4
10—at least 1.4

estimateEstimate only — not a warranty: a typical 10-year-old example of this family has at least 1.4 expected years of further MOT-present life. The curve is observed only until age 11, so the true figure is likely higher.

Chevrolet Trax faults that come together

Body & structure + Emissions & leaks stand out at 10.93×, against 1.00× if the faults were independent.

above 1.0× = more than expectedbelow 1.0× = less

Group AGroup BTogetherLift
Body, chassis, structureNoise, emissions and leaks4210.93× (rough estimate)
Lamps, reflectors and electrical equipmentSeat belts and supplementary restraint systems266.59× (rough estimate)
SteeringSuspension1633.75× (rough estimate)
Lamps, reflectors and electrical equipmentSteering743.69× (rough estimate)
Lamps, reflectors and electrical equipmentNoise, emissions and leaks553.66× (rough estimate)
Noise, emissions and leaksTyres393.56× (rough estimate)
Noise, emissions and leaksVisibility483.42× (rough estimate)
Body, chassis, structureLamps, reflectors and electrical equipment373.36× (rough estimate)
BrakesNoise, emissions and leaks403.27× (rough estimate)
BrakesTyres813.17× (rough estimate)
Lamps, reflectors and electrical equipmentTyres983.12× (rough estimate)
Lamps, reflectors and electrical equipmentSuspension2772.96× (rough estimate)
BrakesLamps, reflectors and electrical equipment1022.91× (rough estimate)
Body, chassis, structureBrakes262.9× (rough estimate)
Lamps, reflectors and electrical equipmentVisibility1132.81× (rough estimate)
TyresVisibility812.76× (rough estimate)
SteeringVisibility482.57× (rough estimate)
Noise, emissions and leaksSuspension812.49× (rough estimate)
Body, chassis, structureVisibility252.43× (rough estimate)
BrakesSteering392.39× (rough estimate)
Body, chassis, structureSuspension542.26× (rough estimate)
BrakesVisibility722.2× (rough estimate)
BrakesSuspension1652.17× (rough estimate)
SteeringTyres312.12× (rough estimate)
SuspensionVisibility1802.07× (rough estimate)
SuspensionTyres1412.07× (rough estimate)
Body, chassis, structureTyres19too few (rough estimate)
Noise, emissions and leaksSteering18too few (rough estimate)
Seat belts and supplementary restraint systemsSuspension16too few (rough estimate)
Body, chassis, structureSteering14too few (rough estimate)
Identification of the vehicleSuspension13too few (rough estimate)
Identification of the vehicleTyres11too few (rough estimate)
Seat belts and supplementary restraint systemsVisibility10too few (rough estimate)
Identification of the vehicleVisibility9too few (rough estimate)
Identification of the vehicleLamps, reflectors and electrical equipment9too few (rough estimate)
BrakesSeat belts and supplementary restraint systems9too few (rough estimate)
Noise, emissions and leaksSeat belts and supplementary restraint systems7too few (rough estimate)
BrakesIdentification of the vehicle7too few (rough estimate)
Seat belts and supplementary restraint systemsTyres7too few (rough estimate)
Road WheelsSuspension6too few (rough estimate)

Defects in «Body, chassis, structure» and «Noise, emissions and leaks» appear together 10.93× more often than chance (42 co-occurrences in the same test; 78 pairs compared).

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 a Chevrolet Trax?

Cars driven under 5,000 miles a year is well below the reference at 16.2%, against 34.3% for cars driven 8,000–12,000 miles a year.

higher = larger sharecompare shares in percentage points

BandFail %Tests
<5k miles/year16.22%1,375
8–12k miles/year34.34%3,164
Gap (low − normal)-18.13 pp—
By fuel and age

Diesel

AgeLow-use fail %nNormal fail %nGap pp
611.296220.74270-9.45 pp
79.686232.63285-22.95 pp
87.147032300-24.86 pp
914.496939.8299-25.31 pp
1028.777340.14289-11.37 pp
11225048.65222-26.65 pp

Petrol

AgeLow-use fail %nNormal fail %nGap pp
58.966722.12104-13.16 pp
611.9215121.76262-9.84 pp
716.8815438.34253-21.46 pp
820.4816636.89244-16.4 pp
915.8817033.47236-17.59 pp
1013.8616639.13230-25.28 pp
112810040110-12 pp

At matched ages 5–14, cars averaging under 5k miles/year fail at 16.2% vs 34.3% for 8–12k miles/year — 18.1 pp lower (n_low=1,375, n_normal=3,164). 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: 15.5% low-use vs 35.4% normal (-19.8 pp).

Which Chevrolet Trax engine is best?

diesel 1.5–1.8 is highest at 106.6; petrol 1.5–1.8 is lowest at 92.9 — the gap is 13.7 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
petrol1.5–1.8 litre92.925.72%3,207 (rough estimate)
petrol1.2–1.5 litre97.427.37%1,984 (rough estimate)
diesel1.5–1.8 litre106.630.45%4,112 (rough estimate)

Splitting this model by fuel alone hides the thing that actually differs. Within the same badge, the diesel 1.5–1.8 runs at 106.6 against this model's own age norm while the petrol 1.5–1.8 runs at 92.9 — a spread of 13.7 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.

Chevrolet Trax MOT repair costs

The MOT-failure repair budget per test runs from £70.49 to £133.93, against £54.85 for the test itself.

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

MOT repairs, budget
£70–134
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
Suspension21.9 (nat. 15.36)Suspension coil spring (single corner)£180£39.42
Lamps, reflectors and electrical equipment9.1 (nat. 18.09)Battery replacement (standard 12V lead-acid)£140£12.74
Brakes8.2 (nat. 11.25)Front brake pads (parts + labour, typical hatchback)£150£12.30
Tyres6.7 (nat. 8.7)Tyre (single mid-range 16" fitted)£90£6.03

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 £70 to £134, 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.

Chevrolet Trax running costs for a fleet

Fails per 100 at age 10
31
vehicles needing work (rough estimate: 500 tests)
Repairs per 100
£7,049
plus £5,485 in test fees
Off the road
1d
median; 44.06% cleared same day
Failure rate and typical odometer by age
AgeFailsMedian odometerTestsGap vs age 5
1031%72,042500—
1139.98%80,063973—

No single year stands out as the point where this model starts costing more: the year-to-year steps in its failure rate are too small or rest on too few tests to name one (D1 rule: a step is named only with at least 2,000 tests on both sides and a jump above 3 percentage points).

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.

Chevrolet Trax rust problems: where they corrode

Salt-belt exposure stands out at 92nd percentile, against 50th percentile as the middle of published models.

higher = larger sharecompare shares in percentage points

How it rusts
—
not enough tests to publish
Salt Belt exposure
92nd
percentile among the models published here, from its tests across 0 postcode areas

This Chevrolet Trax has too few tests to judge for corrosion once age is held constant, and its owners live in areas that are saltier than most for the models we publish.

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 a Chevrolet Trax advisory become a failure?

Suspension is highest at 24.1%; Non-component advisories are lowest at 0.0% — the gap is 24.1 percentage points.

higher = more likelypercentage is the observed transition probability

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

Chevrolet Trax chance the same component fails at the next MOT, given an advisory now — 2024 UK MOT data
Chevrolet Trax, advisory → failure conversion by component group, chained tests 2019–2024. Chart labels and rates: Suspension 24.1% · Brakes 9% · Tyres 7.4% · Noise, emissions, leaks 4.8% · Non-component 0%.
Advisory today → failure at the next test, with how long you have
ComponentFails next timeTypical lead timeMiles of warningAdvisories tracked
Suspension24.1%12 months7,070700
Brakes9.0%12 months6,3091,317
Tyres7.4%12 months6,1561,849
Noise, emissions and leaks4.8%12 months7,298539
Non-component advisories0.0%——587

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 24 in 100 cars, and the median gap is 12 months and roughly 7,070 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 a Chevrolet Trax?

Suspension after a failure at age 9-11 is highest at 29.5%; Lamps, reflectors and electrical equipment after a passed at age 3-5 are lowest at 4.1% — the gap is 25.4 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
3-5passedSuspension 6.8% · Visibility 4.7% · Lamps, reflectors and electrical equipment 4.1%933
3-5advisorySuspension 8.4% · Visibility 8.0% · Brakes 7.2%475 (rough estimate)
3-5failureSuspension 8.0% · Brakes 5.9% · Visibility 5.9%286 (rough estimate)
6-8passedSuspension 14.0% · Lamps, reflectors and electrical equipment 5.0% · Brakes 4.3%1,898
6-8advisorySuspension 18.3% · Lamps, reflectors and electrical equipment 8.0% · Visibility 8.0%1,362
6-8failureSuspension 21.6% · Lamps, reflectors and electrical equipment 11.6% · Visibility 8.6%1,230
9-11passedSuspension 21.5% · Steering 7.9% · Lamps, reflectors and electrical equipment 7.4%554
9-11advisorySuspension 27.9% · Lamps, reflectors and electrical equipment 10.6% · Brakes 7.7%492 (rough estimate)
9-11failureSuspension 29.5% · Lamps, reflectors and electrical equipment 14.0% · Steering 11.8%516

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.

Chevrolet Trax ownership: what six years of MOTs show

The ten-day re-test pass rate is highest at 53.8%; The later re-test pass rate is lowest at 2.2% — the gap is 51.6 percentage points.

higher = larger sharecompare shares in percentage points

Fixed same day
44.06%
of failures re-tested
Fails /10k miles
0.45
miles actually driven
Clean streaks
39.83%
3+ tests, nothing noted
Odometer anomaly
0.506%
reading went backwards

Failing is usually a same-week event, not a disaster. Of 1,988 failures followed through to their re-test, 44.06% were repaired and passed the same day and 53.77% within ten days; the median gap is 1 day. 4,384 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 0.45 failures per 10,000 miles, on a median of 5,855 miles a year across 1,582 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. 39.83% of these cars strung together three or more tests with nothing recorded at all, while 30.82% 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: 0.506% of 1,582 chains show a reading lower than the previous test, with a median drop of 17,834 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.

Chevrolet Trax safety recalls and how to check yours

DVSA recall campaigns stand out at 3.

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

recall campaigns launched per year

Chevrolet Trax recall campaigns launched per year — 2024 UK MOT data
Campaigns launched per year for the Chevrolet Trax. Source: DVSA vehicle safety recalls. Chart values: 2015: 1 · 2016: 0 · 2017: 0 · 2018: 0 · 2019: 0 · 2020: 0 · 2021: 1 · 2022: 0 · 2023: 0 · 2024: 0 · 2025: 1.
Most recent safety recall campaigns for the Chevrolet Trax
ReferenceLaunchedVehiclesConcern
R/2025/03604/02/20250Chevrolet Takata Driver’s Airbag
R/2021/12514/04/2021783THE BRAKE PEDAL MAY POTENTIALLY STICK AS A RESULT OF HIGH VEHICLE INTERIOR TEMPERATURES
R/2015/12517/07/201538FRONT SEAT LAP BELT PRE-TENSIONER MAY NOT FUNCTION AS INTENDED

DVSA lists 3 safety recall campaigns for the Chevrolet Trax, covering roughly 821 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.

Chevrolet Trax technical service bulletins: what dealers are told

US market, Chevrolet TRAX, model years 2015–2022 only. A count of bulletins, not a UK failure rate.

NHTSA manufacturer communications are 1,728.

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
2014167
  • Equipment (744)
  • Electrical system (426)
  • Engine and cooling (205)
  • Engine (144)
  • Adaptive and mobility equipment (112)
  • Other / uncategorised (112)
  • Powertrain (103)
  • Wheels (67)
2015157
2016216
2017219
2018125
2019144
2020124
202185
2022147
2023132
2024135
202562
202615

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.

Chevrolet Trax owner complaints: what goes wrong

US market, Chevrolet TRAX, model years 2015–2022 only. A count of owner complaints, not a UK failure rate; NHTSA has no UK denominator.

Engine (not MOT-tested) is highest at 219; Restraints are lowest at 71 — the gap is 148.

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
Engine (not MOT-tested)21931.9%not in top 6—complained about, rarely an MOT failure
Lamps & electrical15722.9%9.1#2complained about and fails often
Suspension8712.7%21.9#1complained about and fails often
Transmission (not MOT-tested)8111.8%not in top 6—complained about, rarely an MOT failure
Steering7510.9%3.9#6complained about, fails occasionally
Restraints7110.3%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 contact owns a 2015 Chevrolet Trax. The vehicle was recently purchased. The contact stated that on three separate occasions, the vehicle lost steering functionality, with several unknown warning lights illuminated. The contact stated that the vehicle had not started since the failure. The vehicle was taken back to the dealer; however, the dealer was unable to duplicate the failure.
NHTSA complaint, filed 09/11/2026 · STEERING
Dash shuts down shutting off power steering, and power breaks, no dash readout, no turn signals breaklights or headlights, happens suddenly
NHTSA complaint, filed 08/19/2026 · ELECTRICAL SYSTEM

US owners have filed 687 complaints about the equivalent Chevrolet Trax to the National Highway Traffic Safety Administration, including 54 that mention a crash, 14 a fire and 34 an injury. 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.

Chevrolet Trax MOT: quick answers

Chevrolet Trax MOT Risk Index stands out at 115.7, 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 Chevrolet Trax first-time MOT pass rate?
62.89% of first attempts passed in 2024 (1,482 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 37.11% figure is the first-time initial failure rate, using 1,482 primary tests as the denominator (first-time, excluding retests). The age-adjusted MOT initial-failure ratio 115.7 is shown separately because raw rates compare fleet age as well as cars.

Compare the Chevrolet Trax with other cars

Volkswagen Fox is highest at 116.0; Fiat 500X is lowest at 115.3 — the gap is 0.7 points.

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

Same brand

All Chevrolet MOT statisticsChevrolet Orlando MOT statsChevrolet Matiz MOT stats

Similar risk

DS DS7 (index 115.9)Volkswagen Fox (index 116.0)Fiat 500X (index 115.3)

Same size class

how Honda e compareshow Ferrari California compareshow Ferrari 458 compares

By build year

Chevrolet Trax 2013Chevrolet Trax 2014

By area

Chevrolet Trax MOT failure rate by postcode area

By failure group

Chevrolet Trax body, chassis and structure failuresChevrolet Trax brakes failuresChevrolet Trax vehicle identification failuresChevrolet Trax lamps, reflectors and electrics failuresChevrolet Trax noise, emissions and leaks failuresChevrolet Trax seat belts and airbags failuresChevrolet Trax steering failuresChevrolet Trax suspension failuresChevrolet Trax tyres failuresChevrolet Trax visibility failures


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:chevrolet-trax:dvsa-2024-v2. Full method: methodology.

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