Diesel Peugeot 407: MOT pass rate

61.5% of diesel Peugeot 407s pass the MOT first time, measured across 8,100 DVSA tests on that fuel type alone. Average mileage at test was 126,672.

Diesel against the other Peugeot 407 versions

Why the fuel type changes the number

Diesels carry DPFs, EGR valves and stricter smoke limits, so emissions and exhaust faults account for failures petrol cars never see.

On the Peugeot 407 specifically, petrol is the strongest at 63.8%, and this diesel version sits 0.2 points below the 61.7% model average.

What it means if you are buying one

There is little to choose between fuel types on this model, so decide on running costs and mileage rather than MOT record. Buying a damaged one? run it through the analyzer, check the exact car, decode the VIN and check the mileage before you bid.

Mileage is part of the answer

The average diesel Peugeot 407 had covered 126,672 miles at test, against 96,969 for the petrol. That is high mileage, so timing belts, clutches, suspension bushes and corrosion are the items worth budgeting for rather than the MOT itself.

Fuel type and mileage are tangled together: diesels are usually bought by higher-mileage drivers, so some of any gap between fuels is the miles rather than the engine. The per-year figures on the Peugeot 407 page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Peugeot 407

1. Warning device shows system malfunction, 4.8% of tests (11.69x the national rate for this defect)
2. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 11.5% of tests (7.49x the national rate for this defect)
3. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 6.3% of tests (3.74x the national rate for this defect)
4. Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 4.7% of tests (3.44x the national rate for this defect)
5. Significant brake effort recorded with no brake applied indicating a binding brake, 3.6% of tests (3.43x the national rate for this defect)
6. A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps, 2.7% of tests (3x the national rate for this defect)
7. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 6.4% of tests (2.88x the national rate for this defect)
8. A tyre cords visible or damaged, 4.6% of tests (2.73x the national rate for this defect)
9. A suspension pin, bush or joint excessively worn, 13.4% of tests (2.68x the national rate for this defect)
10. Parking brake efficiency below minimum requirement, 3.3% of tests (2.5x the national rate for this defect)

From 8,144 DVSA-tracked diesel Peugeot 407 tests, 2024, split out from the Peugeot 407's other fuel types. DVSA testers marked 4.93% of these flagged defects as "dangerous", against 5.11% nationally. See which fuel type fails on the most dangerous defects nationally for how that compares across the whole fleet.

Most common MOT advisories on a diesel Peugeot 407

Flagged but doesn't fail the car, a different list from the failures above.

1. A wheel bearing with excessive play, 3% of tests (4.56x the national rate for this defect)
2. Significant brake effort recorded with no brake applied indicating a binding brake, 8% of tests (4.01x the national rate for this defect), also fails
3. Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow, 3.9% of tests (3.52x the national rate for this defect)
4. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 18.1% of tests (3.26x the national rate for this defect)
5. A suspension pin, bush or joint excessively worn, 35.6% of tests (2.66x the national rate for this defect), also fails
6. Number plate inscription missing or illegible, 6.2% of tests (2.34x the national rate for this defect)
7. Brake disc or drum excessively weakened, insecure or fractured, 27.7% of tests (2.27x the national rate for this defect)
8. A brake hose ferrule excessively corroded, 2.7% of tests (2.1x the national rate for this defect)
9. Brake disc or drum significantly and obviously worn, 5.2% of tests (1.62x the national rate for this defect)
10. Tyre tread depth not in accordance with the requirements, 38.6% of tests (1.45x the national rate for this defect)

From 8,144 DVSA-tracked diesel Peugeot 407 tests, 2024.

Other Peugeot 407 fuel types

• Petrol Peugeot 407 - 63.8%

All Peugeot 407 MOT data · Every model