2009 Mercedes-Benz M-Class · 8,624 MOT tests
2009 Mercedes-Benz M-Class reliability
2009 Mercedes-Benz M-Classs fail 30.7% of first MOT tests, 28% fewer MOT fails than the average car its age and mileage, ranking 6 of 16 M-Class years (8,624 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz M-Classs: 27%)
- 30.7%
- first-time fail rate (all Mercedes-Benz M-Classs: 27%)
- fails than cars of the same age and mileage
- 28% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 14
- 116,169
- typical miles at its MOT, aged about 14
- MOT tests, 2022 to 2024
- 8,624
- MOT tests, 2022 to 2024
Year on year
2009 against the years either side
- 2008 cars: 28% fewer MOT fails than the average car its age (the 2009 car does better)
- 2010 cars: 28% fewer MOT fails than the average car its age (the 2009 car does better)
- Strong point: windscreen, wipers and mirrors, 66% fewer fails than comparable cars.
- Plates: a 2009 car carries a 58 plate (January–February 2009), or a 09 plate (March–August 2009), or a 59 plate (September–December 2009).
Common problems
What fails on a 2009 Mercedes-Benz M-Class
Fail rate by area
- Lights and electrics17.6%
- Brakes10.7%
- Suspension6.6%
- Tyres5.3%
- Exhaust, emissions and leaks3.4%
- Body, chassis and structure3%
- Windscreen, wipers and mirrors2.2%
Average for cars of the same age and mileage
Top failures
Coil spring fractured or broken 4.23%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Stop lamp not working 3.99%
A failed stop lamp means drivers behind cannot see when you brake, a safety risk that must be fixed.
Side repeater not working 3.87%
A failed side repeater means other road users cannot see your intended direction change, which is dangerous and must be fixed.
Position lamp not working 3.84%
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
Rigid brake pipe excessively corroded 2.04%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Tyre tread below 1.6mm 1.63%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Common advisories
Engine oil leak, not excessive (15.71%) · Tyre worn close to legal limit (14.31%) · Brake pipes corroded and greasy (13.09%) · Brake pads wearing thin (4.45%) · Brake disc pitted or scored (4.44%) · Suspension arm pin/bush showing wear (3.36%)
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 2009 Mercedes-Benz M-Class reliable?
2009 Mercedes-Benz M-Classs fail 30.7% of first MOT tests, 28% fewer MOT fails than the average car its age and mileage, ranking 6 of 16 M-Class years (8,624 DVSA tests, 2022 to 2024).
What fails on a 2009 Mercedes-Benz M-Class MOT?
Most often coil spring fractured or broken (4.23% of tests), stop lamp not working (3.99% of tests), side repeater not working (3.87% of tests).
How many miles should a 2009 Mercedes-Benz M-Class have done?
At its MOT aged about 14, a typical 2009 Mercedes-Benz M-Class shows 116,169 miles. Much higher or lower is worth asking about.
What plate is a 2009 car?
A car first registered in 2009 carries a 58 plate (January–February 2009), or a 09 plate (March–August 2009), or a 59 plate (September–December 2009).
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