2014 Mercedes-Benz M-Class · 15,254 MOT tests
2014 Mercedes-Benz M-Class reliability
2014 Mercedes-Benz M-Classs fail 17.3% of first MOT tests, 41% fewer MOT fails than the average car its age and mileage, ranking 3 of 16 M-Class years (15,254 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz M-Classs: 27%)
- 17.3%
- first-time fail rate (all Mercedes-Benz M-Classs: 27%)
- fails than cars of the same age and mileage
- 41% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 9
- 78,847
- typical miles at its MOT, aged about 9
- MOT tests, 2022 to 2024
- 15,254
- MOT tests, 2022 to 2024
Year on year
2014 against the years either side
- 2013 cars: 47% fewer MOT fails than the average car its age (the 2014 car does worse)
- 2015 cars: 40% fewer MOT fails than the average car its age (the 2014 car does better)
- Strong point: brakes, 65% fewer fails than comparable cars.
- Plates: a 2014 car carries a 63 plate (January–February 2014), or a 14 plate (March–August 2014), or a 64 plate (September–December 2014).
Common problems
What fails on a 2014 Mercedes-Benz M-Class
Fail rate by area
- Tyres5.3%
- Lights and electrics4.4%
- Suspension4.2%
- Exhaust, emissions and leaks2.5%
- Brakes2.2%
- Windscreen, wipers and mirrors1.7%
- Body, chassis and structure1.1%
Average for cars of the same age and mileage
Top failures
Coil spring fractured or broken 3.15%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Tyre tread below 1.6mm 1.52%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Diesel engine warning light faulty 1.42%
A lit or non-working engine warning light can hide faults, so diagnosis is needed before buying.
Tyre ply or cords exposed 1.37%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre cut reaching ply or cords 1.17%
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 0.85%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Common advisories
Tyre worn close to legal limit (13.63%) · Brake pads wearing thin (4.96%) · Brake disc pitted or scored (3.8%) · Brake discs showing some wear (2.81%) · Tyre worn close to legal limit (2.19%) · Tyre slightly damaged or cracking (2.1%)
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 2014 Mercedes-Benz M-Class reliable?
2014 Mercedes-Benz M-Classs fail 17.3% of first MOT tests, 41% fewer MOT fails than the average car its age and mileage, ranking 3 of 16 M-Class years (15,254 DVSA tests, 2022 to 2024).
What fails on a 2014 Mercedes-Benz M-Class MOT?
Most often coil spring fractured or broken (3.15% of tests), tyre tread below 1.6mm (1.52% of tests), diesel engine warning light faulty (1.42% of tests).
How many miles should a 2014 Mercedes-Benz M-Class have done?
At its MOT aged about 9, a typical 2014 Mercedes-Benz M-Class shows 78,847 miles. Much higher or lower is worth asking about.
What plate is a 2014 car?
A car first registered in 2014 carries a 63 plate (January–February 2014), or a 14 plate (March–August 2014), or a 64 plate (September–December 2014).
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