2015 Mercedes-Benz M-Class · 12,510 MOT tests
2015 Mercedes-Benz M-Class reliability
2015 Mercedes-Benz M-Classs fail 15.3% of first MOT tests, 40% fewer MOT fails than the average car its age and mileage, ranking 4 of 16 M-Class years (12,510 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz M-Classs: 27%)
- 15.3%
- first-time fail rate (all Mercedes-Benz M-Classs: 27%)
- fails than cars of the same age and mileage
- 40% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 8
- 68,964
- typical miles at its MOT, aged about 8
- MOT tests, 2022 to 2024
- 12,510
- MOT tests, 2022 to 2024
Year on year
2015 against the years either side
- 2014 cars: 41% fewer MOT fails than the average car its age (the 2015 car does worse)
- Strong point: windscreen, wipers and mirrors, 66% fewer fails than comparable cars.
- Plates: a 2015 car carries a 64 plate (January–February 2015), or a 15 plate (March–August 2015), or a 65 plate (September–December 2015).
Common problems
What fails on a 2015 Mercedes-Benz M-Class
Fail rate by area
- Tyres5.7%
- Lights and electrics3.3%
- Suspension2.9%
- Brakes2%
- Exhaust, emissions and leaks2%
- Windscreen, wipers and mirrors1.3%
- Body, chassis and structure0.6%
Average for cars of the same age and mileage
Top failures
Coil spring fractured or broken 2.04%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Tyre tread below 1.6mm 1.49%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 1.32%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Diesel engine warning light faulty 1.24%
A lit or non-working engine warning light can hide faults, so diagnosis is needed before buying.
Tyre cut reaching ply or cords 1.22%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Headlamp aim set too high 0.66%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Common advisories
Tyre worn close to legal limit (13.21%) · Brake pads wearing thin (5.28%) · Brake disc pitted or scored (3.68%) · Brake discs showing some wear (2.8%) · Tyre worn close to legal limit (2.07%) · Child seat limits belt inspection (2.05%)
Other years
Every Mercedes-Benz M-Class year
The full picture: Mercedes-Benz M-Class reliability. Before you pay for any Mercedes-Benz M-Class, a Full Check (£9.99) shows finance, stolen and write-off records the MOT can't.
Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2015 Mercedes-Benz M-Class reliable?
2015 Mercedes-Benz M-Classs fail 15.3% of first MOT tests, 40% fewer MOT fails than the average car its age and mileage, ranking 4 of 16 M-Class years (12,510 DVSA tests, 2022 to 2024).
What fails on a 2015 Mercedes-Benz M-Class MOT?
Most often coil spring fractured or broken (2.04% of tests), tyre tread below 1.6mm (1.49% of tests), tyre ply or cords exposed (1.32% of tests).
How many miles should a 2015 Mercedes-Benz M-Class have done?
At its MOT aged about 8, a typical 2015 Mercedes-Benz M-Class shows 68,964 miles. Much higher or lower is worth asking about.
What plate is a 2015 car?
A car first registered in 2015 carries a 64 plate (January–February 2015), or a 15 plate (March–August 2015), or a 65 plate (September–December 2015).
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