2025 MOT results
Peugeot 407 common problems
The most common reason a Peugeot 407 fails its MOT is a split joint boot, on 23.6% of its 3,129 failed tests in 2025. Against other cars of the same age, 4 faults stand out, the widest gaps being: a lighting fault at 10.0% of failures against 2.1% expected; a split joint boot at 23.6% of failures against 6.6% expected; washers that do not work at 10.2% of failures against 5.5% expected.
- Tests in 2025 6,649 Cars aged three and over
- Failed first time 47.1% 3,129 tests
- Found a dangerous defect 12.7% Unsafe to drive away
- Ended with an advisory 72.9% A problem to watch, not a failure
What fails a Peugeot 407 MOT
Each bar is the share of failed Peugeot 407 tests with that defect. Where we can compare it with cars of the same registration years, the marker shows what an average car of those ages records (12 of the 12 items below).
Most common reasons for failure
A test can fail for more than one defect, so shares add up to more than 100%.
| Defect | Share of failed tests |
|---|---|
| Drive shafts: constant velocity boot split or insecure, no longer prevents the ingress of dirt Body, chassis, structure | 23.6% |
| Position lamp: not working Lamps, reflectors and electrical equipment | 15.7% |
| Stop lamp: not working Lamps, reflectors and electrical equipment | 11.6% |
| Washers: provides insufficient washer liquid Visibility | 10.2% |
| Anti-lock braking system: warning lamp indicates an ABS fault Brakes | 10.0% |
| Tyres: ply or cords exposed Tyres | 7.3% |
| Suspension arms: ball joint excessively worn Suspension | 7.3% |
| Suspension arms: pin or bush excessively worn Suspension | 7.1% |
| Tyres: tread depth below requirements of 1.6mm Tyres | 6.8% |
| Parking brake efficiency below requirements Brakes | 6.6% |
| Brake pads: less than 1.5 mm thick Brakes | 6.4% |
| Registration plate lamp(s): inoperative in the case of a single lamp or all lamps Lamps, reflectors and electrical equipment | 6.0% |
Source:DVSA,UK Motoring analysis 2025 Updated
-
Split joint boot
23.6% of failures 6.6% expected 3.6 times as often
A split rubber boot on a joint or driveshaft. The joint may still be sound, but dirt and water get in once the boot is open.
Turn the wheels to full lock and look behind them for greasy splits in the rubber concertina.
-
Sidelight out
15.7% of failures 13.6% expected somewhat more often
A sidelight, also called a position lamp, not working. It marks the width of the car at night.
Walk round the car with the lights on and the hazards going; these are the cheapest failures to avoid.
-
Brake light out
11.6% of failures 9.2% expected somewhat more often
A brake light not working, from a bulb, a poor earth, or the switch on the pedal.
Reverse up to a wall or window at dusk and press the pedal to see all three lamps light.
-
Washers that do not work
10.2% of failures 5.5% expected 1.9 times as often
The washers cannot deliver enough liquid to clean the windscreen with the wipers.
Top the bottle up and check both jets reach the glass; the pump is often fine and the jet blocked.
-
Lighting fault
10.0% of failures 2.1% expected 4.8 times as often
A lighting fault. Lamps are the most common failure area on almost every model, and the cheapest to put right.
-
Tyre worn through to the cords
7.3% of failures 4.3% expected 1.7 times as often
The tyre is worn or damaged far enough to expose the cords underneath, which is a dangerous defect.
Run a hand round the inner and outer walls of each tyre, which is where kerbing shows.
Which parts of the car fail
Lamps, reflectors and electrical equipment is the area that most often fails a Peugeot 407, on 49.0% of failed tests. The widest gap against cars of the same registration years is body, chassis, structure, on 28.5% against 17.3% expected.
Failure categories
DVSA's own sections of the test. The marker is what cars of the same registration years record.
| Defect category | Share of failed tests |
|---|---|
| Lamps, reflectors and electrical equipment | 49.0% |
| Suspension | 32.3% |
| Brakes | 32.1% |
| Body, chassis, structure | 28.5% |
| Tyres | 19.5% |
| Visibility | 19.4% |
| Noise, emissions and leaks | 13.0% |
| Steering | 8.3% |
Source:DVSA,UK Motoring analysis 2025 Updated
What testers warn about
72.9% of Peugeot 407 tests ended with at least one advisory: a fault the tester found that did not fail the test. On Peugeot 407s, these are the items to ask about on a car you are viewing, because they are what the last tester expected to go next.
Most common advisories
Share of all tests, passes included.
| Advisory | Share of tests |
|---|---|
| Tread depth: worn close to legal limit or worn on edge Tyres | 25.0% |
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 19.7% |
| Engine oil leak, but not excessive Noise, emissions and leaks | 19.7% |
| Tyres: slightly damaged or cracking or perishing Tyres | 11.0% |
| Linkage ball joint has slight play Suspension | 10.4% |
| Brake pads: wearing thin Brakes | 7.7% |
| Suspension arms: pin or bush worn but not resulting in excessive movement Suspension | 7.3% |
| Registration plates: deteriorated but not likely to be misread Identification of the vehicle | 6.3% |
| Service brake performance: binding but not excessively Brakes | 6.0% |
| Coil spring: corroded Suspension | 5.6% |
| Suspension arms: ball joint has slight play Suspension | 5.5% |
| Play in steering rack inner joint(s) Non-component advisories | 5.2% |
Source:DVSA,UK Motoring analysis 2025 Updated
Peugeot 407 problems: common questions
What is the most common problem with a Peugeot 407?
Of the faults that fail an MOT, “Drive shafts: constant velocity boot split or insecure, no longer prevents the ingress of dirt” is the most common: it appears on 23.6% of failed Peugeot 407 tests. Across categories, lamps, reflectors and electrical equipment is the area that most often fails one, on 49.0% of failed tests.
How often does a Peugeot 407 fail its MOT?
47.1% of Peugeot 407 tests in 2025 were not passed first time, from 6,649 tests of cars aged three and over. Allowing for the age and mileage of the cars tested, that gives it a UK Motoring Reliability Score of 43 out of 100, where 50 is as expected.
Does anything fail more often on a Peugeot 407 than on other cars?
Yes. “Anti-lock braking system: warning lamp indicates an ABS fault” appears on 10.0% of its failures against 2.1% for cars of the same age, and “Drive shafts: constant velocity boot split or insecure, no longer prevents the ingress of dirt” appears on 23.6% of its failures against 6.6% for cars of the same age. Where an item is missing from the national figures for a year, we use the smallest share those figures show, so the comparison never overstates the difference.
Are these the same as breakdowns or known faults?
No. These are the items a tester recorded at the MOT, which covers condition and safety: lamps, brakes, tyres, suspension, corrosion and emissions. A gearbox that is unpleasant, an infotainment screen that has died, or a car that will not start on a cold morning are not part of the test, so they are not in these figures.
Where do the figures come from?
Every normal MOT test of a Peugeot 407 aged three and over in Great Britain in 2025, from DVSA's anonymised MOT results. Retests are excluded, and the same fault on more than one wheel counts once.
Data stories to read next
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| MOT defects and advisories | Anonymised MOT tests and results Driver and Vehicle Standards Agency Derived statistics UK Motoring | 2025 | 6,649 MOT tests | 19 September 2026 |
- Shares for defects are of failed tests; shares for advisories are of all tests. A test can carry several defects, so shares add to more than 100%.
- The expected share is what an average car of the same registration years records, weighted by where this model’s failures fall. Where an item is outside the national figures for a year, the smallest share those figures show is used in its place, which is an upper bound, so the comparison never overstates a model’s problems. No expectation is published where less than 80% of the model’s failures can be compared.
- Great Britain only: DVSA does not run MOT testing in Northern Ireland. Cars under three years old are not tested.
- The descriptions of what each part does are general and the same on every model. Every figure comes from the MOT data.
Contains public sector information licensed under the Open Government Licence v3.0.