Diesel Toyota Previa: MOT pass rate

66.2% of diesel Toyota Previas pass the MOT first time, measured across 699 DVSA tests on that fuel type alone. Average mileage at test was 145,656.

Diesel against the other Toyota Previa 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 Toyota Previa specifically, diesel is the strongest at 66.2%, and this diesel version sits 1.5 points above the 64.7% model average.

What it means if you are buying one

The diesel Toyota Previa is the stronger side of this model on MOT data. Still judge the individual car, but the fuel type is a mild point in its favour. 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 Toyota Previa had covered 145,656 miles at test, against 138,738 for the petrol. That is very high mileage. Clutches, dual-mass flywheels and head gaskets have usually been through at least one repair by this point, so ask for evidence rather than assume the car is original everywhere.

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 Toyota Previa page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Toyota Previa

1. Headlamp reflector or lens seriously defective or missing, 5% of tests (23.38x the national rate for this defect)
2. Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow, 3.6% of tests (17.47x the national rate for this defect)
3. Body, cab or chassis excessively corroded at a mounting point, 2.7% of tests (11.62x the national rate for this defect)
4. The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, 9.9% of tests (10.53x the national rate for this defect)
5. Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced, 4.2% of tests (10.17x the national rate for this defect)
6. The aim of a headlamp is not within limits laid down in the requirements, 10.6% of tests (4.53x the national rate for this defect)
7. Wiper blade missing or obviously not clearing the windscreen, 6.7% of tests (3.53x the national rate for this defect)
8. Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 4.5% of tests (3.29x the national rate for this defect)
9. Brake pipe damaged or excessively corroded, 3.2% of tests (3.01x the national rate for this defect)
10. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 6.4% of tests (2.89x the national rate for this defect)

From 714 DVSA-tracked diesel Toyota Previa tests, 2024, split out from the Toyota Previa's other fuel types. DVSA testers marked 2.59% 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 Toyota Previa

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

1. A stub axle swivel pin and/or bush excessively worn, 16.4% of tests (25.57x the national rate for this defect)
2. Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow, 17.5% of tests (15.82x the national rate for this defect), also fails
3. A spring or spring component fractured or seriously weakened, 52.7% of tests (11.14x the national rate for this defect)
4. Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced, 12.2% of tests (9.79x the national rate for this defect), also fails
5. The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, 14.3% of tests (9.41x the national rate for this defect), also fails
6. A brake hose ferrule excessively corroded, 9.2% of tests (7.26x the national rate for this defect)
7. Brake pipe damaged or excessively corroded, 35.2% of tests (5.68x the national rate for this defect), also fails
8. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 28.3% of tests (5.09x the national rate for this defect)
9. Number plate inscription missing or illegible, 10.5% of tests (3.96x the national rate for this defect)
10. A suspension pin, bush or joint excessively worn, 50% of tests (3.74x the national rate for this defect)

From 714 DVSA-tracked diesel Toyota Previa tests, 2024.

Other Toyota Previa fuel types

• Petrol Toyota Previa - 64.2%

All Toyota Previa MOT data · Every model