Alfa Romeo 156 — MOT statistics 2024

The Alfa Romeo 156 failed 40.05% of 1,206 first MOT attempts in 2024 ("first-time", excluding retests). Adjusted for the age of the fleet, its initial-failure ratio is 98.0 (100 = expected for its age profile). This car is too close to call — statistically indistinguishable from normal for its age. Small sample — treat with care.

Age-adjusted peer: Vauxhall Grandland (index 98.0) — the two published results are 0.0 index points apart.

Alfa Romeo 156 common problems: what actually fails the MOT

Body, chassis, structure stand out at 22.1 per 100 tests, against 15.5 per 100 tests across UK vehicles of the same ages.

higher bar = fails more oftenrate per 100 tests

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.

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

Alfa Romeo 156 MOT advisories: what gets flagged

Suspension is highest at 60.6 per 100 tests; Lamps & electrical are lowest at 7.7 per 100 tests — the gap is 52.9 per 100 tests.

higher bar = flagged more oftenadvisory items per 100 initial tests

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

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.

A failed test raises next year's chance of failing again by 4.6 percentage points. The failure most likely to come back is visibility — 45.4% 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 12,014 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.

Mileage changes little here (+0.0 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 Alfa Romeo 156 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.

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 Alfa Romeo 156 perform as it gets older?

The Romeo 156 at age 19 is well below the reference at 38.0%, against 43.5% for all vehicles of the same age.

higher = larger sharecompare shares in percentage points

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

Takeaway: solid line: this family; dashed: all cars.

How dangerous are Alfa Romeo 156 MOT failures?

Major defects stand out at 133.7 per 100 tests, against 52.8 per 100 tests nationally.

higher bar = fails more oftenrate per 100 tests

Chart values: Minor 23.6 · Major 133.7 · Dangerous 16.5.

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

Does the month of an Alfa Romeo 156 MOT matter?

Feb is highest at 49.0%; Dec is lowest at 42.4% — the gap is 6.6 percentage points.

higher = larger sharecompare shares in percentage points

Chart scale: 27%–50%.

bars: Alfa Romeo 156 · dashed: all class-4 cars

Takeaway: the spread between best and worst month is 6.6 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.

Alfa Romeo 156 average mileage by age

At age 20+, the middle half of Romeo 156s runs from 72,047 miles to 125,794 miles, against 97,284 miles as the median.

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

Does high mileage mean more Alfa Romeo 156 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+, 34.7% of those with 40,000–70,000 miles failed first time versus 46.9% of those with over 140,000 miles.No clear mileage gap inside this age group, among cars still being tested.

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

A typical 20+-year-old Romeo 156 has ~97,284 miles on the clock. Much more — ask why; much less — check for gaps in the MOT history.

Where in Britain the Alfa Romeo 156 fails its MOT most

Carlisle area is highest at 70.2%; Twickenham area is lowest at 27.0% — the gap is 43.3 percentage points.

higher = larger sharecompare shares in percentage points

Toughest areas	% failing	vs model overall
Carlisle (CA)	70.23%	+24.0 pp
Bristol (BS)	67.3%	+21.0 pp
Luton (LU)	64.49%	+18.2 pp
Plymouth (PL)	62.71%	+16.5 pp
Exeter (EX)	61.82%	+15.6 pp

Easiest areas	% failing	vs model overall
Twickenham (TW)	26.97%	-19.3 pp
Enfield (EN)	27.94%	-18.3 pp
Southend-on-Sea (SS)	31.96%	-14.3 pp
Wolverhampton (WV)	32.69%	-13.6 pp
Kingston upon Thames (KT)	34.53%	-11.7 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: 32%–67% failing.

How many miles does an Alfa Romeo 156 last?

100,000+ miles is highest at 50.8%; 150,000+ miles is lowest at 13.0% — the gap is 37.8 percentage points.

higher = larger sharecompare shares in percentage points

Of 12,117 tests of this family with a usable odometer in 2024, 50.8% had reached 100k miles, 13.0% had reached 150k miles. This is a cross-section of cars still presenting for MOT, not a full birth cohort.

Alfa Romeo 156 faults that come together

Identification + Seatbelts & SRS stand out at 3.69×, against 1.00× if the faults were independent.

above 1.0× = more than expectedbelow 1.0× = less

Defects in «Body, chassis, structure» and «Noise, emissions and leaks» appear together 2.71× more often than chance (535 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 Alfa Romeo 156?

Cars driven under 5,000 miles a year is well below the reference at 37.3%, against 53.7% for cars driven 8,000–12,000 miles a year.

higher = larger sharecompare shares in percentage points

At matched ages 5–14, cars averaging under 5k miles/year fail at 37.2% vs 53.7% for 8–12k miles/year — 16.5 pp lower (n_low=102, n_normal=227). 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.

Which Alfa Romeo 156 engine is best?

petrol 1.5–1.8 is highest at 108.7; petrol over 2.0 is lowest at 85.1 — the gap is 23.6 points.

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

Splitting this model by fuel alone hides the thing that actually differs. Within the same badge, the petrol 1.5–1.8 runs at 108.7 against this model's own age norm while the petrol over 2.0 runs at 85.1 — a spread of 23.6 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 Alfa Romeo 156, and the years to avoid

Build year 2005 is highest at 98.9; Build year 2004 is lowest at 93.1 — the gap is 5.8 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

The best build year here is 2004 and the weakest is 2004. 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 — 1 of 4 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.

Alfa Romeo 156 MOT repair costs

The MOT-failure repair budget per test runs from £179.22 to £340.52, against £54.85 for the test itself.

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

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 £179 to £341, 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.

Alfa Romeo 156 rust problems: where they corrode

Age-standardised corrosion susceptibility stands out at 3.22×, against 1.00× for the national age-standardised rate.

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

This Alfa Romeo 156 fails on corrosion far more often than average once age is held constant, and its owners live in areas that are gentler than most for the models we publish. Those two point in opposite directions, which is the informative case: it rusts more than average despite living in gentler places, so the cause is the car, not the postcode.

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 Alfa Romeo 156 advisory become a failure?

Body, chassis, structure are highest at 24.5%; Non-component advisories are lowest at 0.0% — the gap is 24.5 percentage points.

higher = more likelypercentage is the observed transition probability

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

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 25 in 100 cars, and the median gap is 12.1 months and roughly 2,972 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 Alfa Romeo 156?

Lamps, reflectors and electrical equipment after a failure at age 12-14 are highest at 32.9%; Body, chassis, structure after a passed at age 20+ are lowest at 8.0% — the gap is 24.9 percentage points.

higher = more likelypercentage is the observed transition probability

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.

Alfa Romeo 156 ownership: what six years of MOTs show

The ten-day re-test pass rate is highest at 68.9%; The later re-test pass rate is lowest at 9.4% — the gap is 59.5 percentage points.

higher = larger sharecompare shares in percentage points

Failing is usually a same-week event, not a disaster. Of 3,569 failures followed through to their re-test, 21.77% were repaired and passed the same day and 68.87% within ten days; the median gap is 2 days. 12,070 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 1.285 failures per 10,000 miles, on a median of 2,162 miles a year across 2,633 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. 23.16% of these cars strung together three or more tests with nothing recorded at all, while 39.71% 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: 1.738% of 2,646 chains show a reading lower than the previous test, with a median drop of 33,820 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.

Alfa Romeo 156 safety recalls and how to check yours

DVSA recall campaigns stand out at 7.

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

recall campaigns launched per year

DVSA lists 7 safety recall campaigns for the Alfa Romeo 156, covering roughly 7,802 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.

Alfa Romeo 156 inspection results in other countries

Netherlands APK stands out at 75.1%, against 50.8% nationally.

higher = larger sharecompare shares in percentage points

The verdict is consistent across every regime where the difference is clear, which is the strongest form this comparison takes: independent inspectorates, different rulebooks, same direction of travel.

Worth dwelling on how mundane the top of that list is: tyre pressure, tread depth, headlight aim. The Dutch APK records 2.279 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 Alfa Romeo 156 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.

One caveat before you read the UK row: these are raw failure rates, because no other country publishes the age detail our index needs. This model's raw UK rate looks worse than the national average while its age-adjusted index is 98.0 — the fleet here is unusually old, and the raw column silently credits that. The index above is the fair comparison; this table is for reading each country against itself.

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.. Adapted; licences and full notice.

Alfa Romeo 156 MOT: quick answers

Alfa Romeo 156 MOT Risk Index is close to the reference at 98.0, 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 Alfa Romeo 156 first-time MOT pass rate?

59.95% of first attempts passed in 2024 (1,206 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 40.05% figure is the first-time initial failure rate, using 1,206 primary tests as the denominator (first-time, excluding retests). The age-adjusted MOT initial-failure ratio 98.0 is shown separately because raw rates compare fleet age as well as cars.

Compare the Alfa Romeo 156 with other cars

Peugeot 107 is highest at 98.2; Alfa Romeo 156 is lowest at 98.0 — the gap is 0.2 points.

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

Same brand

All Alfa Romeo MOT statisticsAlfa Romeo GT MOT statsAlfa Romeo Giulietta MOT stats

Similar risk

Vauxhall Grandland (index 98.0)Honda Civic (index 98.1)Peugeot 107 (index 98.2)

Same size class

how Volkswagen Corrado compareshow Land Rover Discovery Sport compareshow Hyundai Terracan compares

By build year

Alfa Romeo 156 2002Alfa Romeo 156 2003Alfa Romeo 156 2004Alfa Romeo 156 2005

By area

Alfa Romeo 156 MOT failure rate by postcode area

By failure group

Alfa Romeo 156 body, chassis and structure failuresAlfa Romeo 156 brakes failuresAlfa Romeo 156 vehicle identification failuresAlfa Romeo 156 lamps, reflectors and electrics failuresAlfa Romeo 156 noise, emissions and leaks failuresAlfa Romeo 156 road wheels failuresAlfa Romeo 156 seat belts and airbags failuresAlfa Romeo 156 steering failuresAlfa Romeo 156 suspension failuresAlfa Romeo 156 tyres failuresAlfa Romeo 156 visibility failures

Inspections abroad

Alfa Romeo 156 in the Netherlands