16,815 tests in 2025
Peugeot 508 reliability and MOT pass rate
76.1% passed first time. The 23.9% fail rate is 1.3 points worse than the all-car average, on a median example 11 years old with 90,668 miles.
Pass rate
76.1%
22.6% of all cars failed; 23.9% of these did.
Fixed on the day
5%
Passed after a defect was put right during the visit.
Median at test
90,668 mi
11 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 3,089 | 14.2% |
| 6-9 years | 3,887 | 18.7% |
| 10-13 years | 7,664 | 28.9% |
| 14+ years | 2,130 | 30% |
What the 508 fails on
Share of failed tests with at least one fail item in each DVSA inspection section. A test can fail in several sections at once.
- Suspension88 dangerous34.3%
- Tyres1,489 dangerous32.8%
- Lamps, reflectors and electrical equipment12 dangerous28%
- Brakes640 dangerous25.6%
- Visibility1 dangerous14.5%
- Body, chassis, structure17 dangerous12.7%
- Noise, emissions and leaks2 dangerous9.1%
- Steering10 dangerous4.7%
Is the 508 getting worse?
The fail rate rose 3.1 points to 24.8% from 2022 to 2025 while the median one tested aged 2 years. Ageing alone would predict about 5.2 points, so it is holding up better than the fleet average for its age.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 18,024 | 9 | 21.7% | 22.5% | |
| 2023 | 18,104 | 10 | 24.6% | 22.8% | |
| 2024 | 15,825 | 11 | 24.4% | 23.2% | |
| 2025 | 15,441 | 11 | 24.8% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical 508 at its test that year, and it is the number to watch: across the whole fleet each extra year of age adds roughly 1.9 points to the fail rate, so a model whose age and fail rate rise together is simply getting older.
The exact defects that fail it
Every failure item DVSA recorded against a 508 in 2025, counted by how many tests each one appeared on.
- 1Tread depth: tread depth below requirements of 1.6mm618 tests
- 2Coil spring: fractured or broken604 tests
- 3Brake pads: less than 1.5 mm thick464 tests
- 4Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt363 tests
- 5Condition: has ply or cords exposed317 tests
- 6Pins and bushes: pin or bush excessively worn295 tests
- 7Wipers: does not clear the windscreen effectively254 tests
- 8Registration plate lamp(s): inoperative in the case of a single lamp or all lamps248 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical 508 collects 2.52 of them per test, and these are the ones that come up most. Treat it as the running-repairs list for the next year or two.
- 1Tread depth: tread depth below requirements of 1.6mm3,537 tests
- 2Brake discs: in such a condition that it is seriously weakened2,121 tests
- 3Brake pads: less than 1.5 mm thick1,858 tests
- 4Engine oil leaks: leaking excessively from engine1,082 tests
- 5Pins and bushes: pin or bush excessively worn1,008 tests
- 6Condition: has a tear, caused by separation or partial failure of its structure983 tests
- 7Linkage ball joints: ball joint excessively worn742 tests
- 8Brake discs: significantly and obviously worn550 tests
Questions
What is the Peugeot 508 MOT pass rate?
76.1% of the 16,815 Peugeot 508 first-attempt MOTs in 2025 passed. The fail rate of 23.9% compares with 22.6% across all cars. A further 5% passed after a defect was fixed during the test visit.
What does a Peugeot 508 usually fail on?
The single most common failure is "Tread depth: tread depth below requirements of 1.6mm", recorded on 618 failed tests, followed by "Coil spring: fractured or broken" and "Brake pads: less than 1.5 mm thick". By section, suspension appears in 34.3% of failures, tyres appears in 32.8% of failures, lamps, reflectors and electrical equipment appears in 28% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 14.2%; at 14+ years it was 30%. The median Peugeot 508 tested in 2025 was 11 years old with 90,668 miles.
Is the Peugeot 508 getting less reliable?
The fail rate rose 3.1 points to 24.8% from 2022 to 2025 while the median one tested aged 2 years. Ageing alone would predict about 5.2 points, so it is holding up better than the fleet average for its age.
First-attempt class 4 tests, 2025, from DVSA’s anonymised MOT data (OGL v3, retrieved 2026-09-12). DVSA records newer cars trim by trim; this page adds every 508 trim together. Year-on-year figures come from the same DVSA extracts for 2026 and earlier years. Full method on the pass rates hub.
DVSA has published 15 safety recalls naming the Peugeot 508: Peugeot 508 recalls.
Other Peugeot models
Checking a particular 508?
The odds above are the model. The car in front of you has its own record: every test, every advisory, the mileage at each one.
Due a test? Find an approved MOT station near you.