Diesel Porsche Macan: MOT pass rate

89% of diesel Porsche Macans pass the MOT first time, measured across 8,672 DVSA tests on that fuel type alone. Average mileage at test was 67,657.

Diesel against the other Porsche Macan 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 Porsche Macan specifically, petrol is the strongest at 93.9%, and this diesel version sits 3.5 points below the 92.5% model average.

What it means if you are buying one

The diesel Porsche Macan 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 Porsche Macan had covered 67,657 miles at test, against 39,249 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 Porsche Macan page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Porsche Macan

1. Number plate does not conform to the specified requirements, 0.5% of tests (2.73x the national rate for this defect)
2. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 3.8% of tests (2.5x the national rate for this defect)
3. Brake lining or pad worn down to wear indicator, 0.4% of tests (1.96x the national rate for this defect)
4. A tyre pressure monitoring system malfunctioning or obviously inoperative, 0.3% of tests (1.26x the national rate for this defect)
5. Tyre tread depth not in accordance with the requirements, 2.1% of tests
6. A tyre seriously damaged, 2% of tests
7. A suspension pin, bush or joint excessively worn, 1.3% of tests
8. A tyre cords visible or damaged, 1% of tests
9. Engine MIL illuminated indicating a malfunction, 0.7% of tests
10. A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED, 0.7% of tests

From 8,707 DVSA-tracked diesel Porsche Macan tests, 2024, split out from the Porsche Macan's other fuel types. DVSA testers marked 4.62% 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 Porsche Macan

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

1. Tyre tread depth not in accordance with the requirements, 27.4% of tests, also fails
2. A suspension pin, bush or joint excessively worn, 9.1% of tests, also fails
3. a brake lining or pad worn below 1.5mm, 8.2% of tests
4. A tyre seriously damaged, 6.9% of tests, also fails
5. Brake disc or drum excessively weakened, insecure or fractured, 3.5% of tests
6. A spring or spring component fractured or seriously weakened, 3.4% of tests
7. Brake disc or drum significantly and obviously worn, 2.3% of tests
8. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 1.1% of tests
9. A suspension component excessively damaged or corroded, 0.6% of tests
10. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 0.6% of tests

From 8,707 DVSA-tracked diesel Porsche Macan tests, 2024.

Other Porsche Macan fuel types

• Petrol Porsche Macan - 93.9%

All Porsche Macan MOT data · Every model