Diesel Mazda Cx-5: MOT pass rate

81% of diesel Mazda Cx-5s pass the MOT first time, measured across 36,943 DVSA tests on that fuel type alone. Average mileage at test was 75,524.

Diesel against the other Mazda Cx-5 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 Mazda Cx-5 specifically, petrol is the strongest at 87.9%, and this diesel version sits 2.5 points below the 83.5% model average.

What it means if you are buying one

The diesel Mazda Cx-5 fails more often than the model average, so budget for the items that catch this fuel type and treat a fresh MOT as worth paying for. 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 Mazda Cx-5 had covered 75,524 miles at test, against 48,154 for the petrol. That is a shade above the middle of the range, still ordinary wear rather than a red flag, but worth checking against the service book for the car's age.

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 Mazda Cx-5 page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Mazda Cx-5

1. A steering ball joint with excessive wear or free play, 3.1% of tests (2.39x the national rate for this defect)
2. a brake lining or pad worn below 1.5mm, 3.2% of tests (1.51x the national rate for this defect)
3. A suspension pin, bush or joint excessively worn, 3.9% of tests
4. A spring or spring component fractured or seriously weakened, 2.5% of tests
5. Tyre tread depth not in accordance with the requirements, 2.4% of tests
6. A tyre seriously damaged, 2% of tests
7. Wiper blade missing or obviously not clearing the windscreen, 1.5% of tests
8. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 1.5% of tests
9. Engine MIL illuminated indicating a malfunction, 1.2% of tests
10. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 0.9% of tests

From 37,127 DVSA-tracked diesel Mazda Cx-5 tests, 2024, split out from the Mazda Cx-5's other fuel types. DVSA testers marked 5.39% 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 Mazda Cx-5

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

1. A steering ball joint with excessive wear or free play, 2.1% of tests (1.55x the national rate for this defect), also fails
2. a brake lining or pad worn below 1.5mm, 14.3% of tests (1.53x the national rate for this defect), also fails
3. A suspension component excessively damaged or corroded, 7.5% of tests (1.44x the national rate for this defect)
4. A suspension pin, bush or joint excessively worn, 15.8% of tests (1.18x the national rate for this defect), also fails
5. Tyre tread depth not in accordance with the requirements, 26.9% of tests, also fails
6. A tyre seriously damaged, 14.2% of tests, also fails
7. Brake disc or drum excessively weakened, insecure or fractured, 14.1% of tests
8. Brake pipe damaged or excessively corroded, 7% of tests
9. Brake disc or drum significantly and obviously worn, 3.4% of tests
10. Number plate inscription missing or illegible, 1.4% of tests

From 37,127 DVSA-tracked diesel Mazda Cx-5 tests, 2024.

Other Mazda Cx-5 fuel types

• Petrol Mazda Cx-5 - 87.9%

All Mazda Cx-5 MOT data · Every model