Petrol Mercedes-Benz G-Class: MOT pass rate

87% of petrol Mercedes-Benz G-Class pass the MOT first time, measured across 841 DVSA tests on that fuel type alone. Average mileage at test was 49,995.

Petrol against the other Mercedes-Benz G-Class versions

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 Mercedes-Benz G-Class specifically, petrol is the strongest at 87%, and this petrol version sits 1.6 points above the 85.4% model average.

What it means if you are buying one

The petrol Mercedes-Benz G-Class 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 Mercedes-Benz G-Class had covered 49,995 miles at test, against 61,935 for the diesel. That is below average for a car this age, worth a mileage-consistency check since an unusually low reading is sometimes clocking rather than luck.

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 Mercedes-Benz G-Class page separate age from fuel if you want to isolate one.

Most common MOT failures on a petrol Mercedes-Benz G-Class

1. Number plate does not conform to the specified requirements, 2.1% of tests (11.43x the national rate for this defect)
2. The aim of a headlamp is not within limits laid down in the requirements, 3.6% of tests (1.55x the national rate for this defect)
3. A tyre seriously damaged, 3.2% of tests
4. A spring or spring component fractured or seriously weakened, 2.3% of tests
5. A steering ball joint with excessive wear or free play, 0.9% of tests
6. Lamp emitted colour, position or intensity not in accordance with the requirements, 0.9% of tests (1.58x the national rate for this defect)
7. Brake disc or drum significantly and obviously worn, 0.9% of tests (1.18x the national rate for this defect)
8. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 0.8% of tests
9. Wiper blade missing or obviously not clearing the windscreen, 0.8% of tests
10. Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc, 0.8% of tests

From 852 DVSA-tracked petrol Mercedes-Benz G-Class tests, 2024, split out from the Mercedes-Benz G-Class's other fuel types. DVSA testers marked 3.29% 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 Mercedes-Benz G-Class

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

1. Lamp emitted colour, position or intensity not in accordance with the requirements, 2.9% of tests (2.14x the national rate for this defect), also fails
2. A steering ball joint with excessive wear or free play, 2.5% of tests (1.85x the national rate for this defect), also fails
3. Brake disc or drum significantly and obviously worn, 4.2% of tests (1.33x the national rate for this defect), also fails
4. Tyre tread depth not in accordance with the requirements, 10.1% of tests
5. A tyre seriously damaged, 9.5% of tests, also fails
6. a brake lining or pad worn below 1.5mm, 6.5% of tests
7. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 6% of tests
8. Brake disc or drum excessively weakened, insecure or fractured, 4.2% of tests
9. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 2.5% of tests
10. A suspension pin, bush or joint excessively worn, 1.5% of tests

From 852 DVSA-tracked petrol Mercedes-Benz G-Class tests, 2024.

Other Mercedes-Benz G-Class fuel types

• Diesel Mercedes-Benz G-Class - 83.1%

All Mercedes-Benz G-Class MOT data · Every model