Petrol BMW 4 Series: MOT pass rate
86.7% of petrol BMW 4 Series pass the MOT first time, measured across 578 DVSA tests on that fuel type alone. Average mileage at test was 60,744.
Petrol against the other BMW 4 Series versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Diesel | 80.9% | 655 |
| Petrol | 86.7% | 578 |
| All BMW 4 Series | 83.6% | 1,233 |
Why the fuel type changes the number
Petrol cars avoid the DPF and emissions failures that catch diesels, and usually fail on the same consumables as any other car.
On the BMW 4 Series specifically, petrol is the strongest at 86.7%, and this petrol version sits 3.1 points above the 83.6% model average.
What it means if you are buying one
The petrol BMW 4 Series 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 petrol BMW 4 Series had covered 60,744 miles at test, against 98,673 for the diesel. That is around average, so condition and service history will tell you more than the odometer does.
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 BMW 4 Series page separate age from fuel if you want to isolate one.
Most common MOT failures on a petrol BMW 4 Series
- A tyre seriously damaged, 4.8% of tests (1.72x the national rate for this defect)
- Tyre tread depth not in accordance with the requirements, 2.6% of tests
- A tyre cords visible or damaged, 2.1% of tests (1.22x the national rate for this defect)
- a brake lining or pad worn below 1.5mm, 1.4% of tests
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1.2% of tests
- A spring or spring component fractured or seriously weakened, 0.9% of tests
- A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.9% of tests
- Brake disc or drum significantly and obviously worn, 0.9% of tests
- Excessive fluctuation in brake effort through each wheel revolution., 0.5% of tests (1.4x the national rate for this defect)
- Lambda coefficient outside the default limits or the range specified by the manufacturer, 0.5% of tests
From 584 DVSA-tracked petrol BMW 4 Series tests, 2024, split out from the BMW 4 Series's other fuel types. DVSA testers marked 9.59% 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 petrol BMW 4 Series
Flagged but doesn't fail the car, a different list from the failures above.
- Tyre tread depth not in accordance with the requirements, 22.8% of tests, also fails
- Brake disc or drum excessively weakened, insecure or fractured, 11.1% of tests
- A tyre seriously damaged, 7.5% of tests, also fails
- a brake lining or pad worn below 1.5mm, 7% of tests, also fails
- A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 3.6% of tests, also fails
- Brake disc or drum significantly and obviously worn, 3.4% of tests, also fails
- A suspension pin, bush or joint excessively worn, 2.7% of tests
- Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 1.9% of tests
- Brake pipe damaged or excessively corroded, 1.7% of tests
- Exhaust system leaking or insecure, 1.4% of tests
From 584 DVSA-tracked petrol BMW 4 Series tests, 2024.
Other BMW 4 Series fuel types
- Diesel BMW 4 Series - 80.9%