3,447 tests in 2025
Citroen Grand C4 reliability and MOT pass rate
59.2% passed first time. The 40.8% fail rate is 18.2 points worse than the all-car average, on a median example 15 years old with 106,820 miles.
Pass rate
59.2%
22.6% of all cars failed; 40.8% of these did.
Fixed on the day
8.9%
Passed after a defect was put right during the visit.
Median at test
106,820 mi
15 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 3 | — |
| 6-9 years | 22 | — |
| 10-13 years | 780 | 36.5% |
| 14+ years | 2,642 | 42.2% |
What the Grand C4 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.
- Lamps, reflectors and electrical equipment7 dangerous53.4%
- Suspension23 dangerous43.4%
- Body, chassis, structure13 dangerous29.2%
- Brakes197 dangerous28.5%
- Tyres361 dangerous21.8%
- Visibility1 dangerous15.4%
- Noise, emissions and leaks3 dangerous14.6%
- Steering5 dangerous10.7%
Is the Grand C4 getting worse?
The fail rate rose 2.7 points to 41% from 2022 to 2025 while the median one tested aged 3 years. Ageing alone would predict about 5.3 points, so it is holding up better than the fleet average for its age.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 5,984 | 12 | 38.3% | 22.5% | |
| 2023 | 5,264 | 13 | 40.9% | 22.8% | |
| 2024 | 3,844 | 14 | 42.5% | 23.2% | |
| 2025 | 3,234 | 15 | 41% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Grand C4 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 Grand C4 in 2025, counted by how many tests each one appeared on.
- 1Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt275 tests
- 2Stop lamp: not working262 tests
- 3Position lamp: not working230 tests
- 4Ball joint: ball joint excessively worn201 tests
- 5Coil spring: fractured or broken183 tests
- 6Tread depth: tread depth below requirements of 1.6mm160 tests
- 7Registration plate lamp(s): inoperative in the case of a single lamp or all lamps147 tests
- 8Brake pads: less than 1.5 mm thick114 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Grand C4 collects 3 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 1.6mm907 tests
- 2Brake discs: in such a condition that it is seriously weakened582 tests
- 3Engine oil leaks: leaking excessively from engine572 tests
- 4Pins and bushes: pin or bush excessively worn525 tests
- 5Brake pads: less than 1.5 mm thick396 tests
- 6Condition: has a tear, caused by separation or partial failure of its structure271 tests
- 7Coil spring: corroded so that its cross sectional area is reduced and seriously weakened187 tests
- 8Ball joint: ball joint excessively worn166 tests
Questions
What is the Citroen Grand C4 MOT pass rate?
59.2% of the 3,447 Citroen Grand C4 first-attempt MOTs in 2025 passed. The fail rate of 40.8% compares with 22.6% across all cars. A further 8.9% passed after a defect was fixed during the test visit.
What does a Citroen Grand C4 usually fail on?
The single most common failure is "Joints: constant velocity boot split or insecure, no longer prevents the ingress of dirt", recorded on 275 failed tests, followed by "Stop lamp: not working" and "Position lamp: not working". By section, lamps, reflectors and electrical equipment appears in 53.4% of failures, suspension appears in 43.4% of failures, body, chassis, structure appears in 29.2% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 33.3%; at 14+ years it was 42.2%. The median Citroen Grand C4 tested in 2025 was 15 years old with 106,820 miles.
Is the Citroen Grand C4 getting less reliable?
The fail rate rose 2.7 points to 41% from 2022 to 2025 while the median one tested aged 3 years. Ageing alone would predict about 5.3 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 Grand C4 trim together. Year-on-year figures come from the same DVSA extracts for 2026 and earlier years. Full method on the pass rates hub.
Other Citroen models
Checking a particular Grand C4?
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.