2009 Mercedes-Benz A-Class · 24,532 MOT tests
2009 Mercedes-Benz A-Class reliability
2009 Mercedes-Benz A-Classs fail 37.1% of first MOT tests, about average for its age and mileage, ranking 12 of 22 A-Class years (24,532 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz A-Classs: 20.6%)
- 37.1%
- first-time fail rate (all Mercedes-Benz A-Classs: 20.6%)
- fails than cars of the same age and mileage
- 2% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 14
- 77,120
- typical miles at its MOT, aged about 14
- MOT tests, 2022 to 2024
- 24,532
- MOT tests, 2022 to 2024
Year on year
2009 against the years either side
- 2008 cars: about average for its age (the 2009 car does better)
- 2010 cars: about average for its age (the 2009 car does better)
- Weak spot: windscreen, wipers and mirrors, 8% of tests fail here (36% above cars of the same age and mileage).
- Strong point: tyres, 22% 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 A-Class
Fail rate by area
- Lights and electrics15.5%
- Suspension11.6%
- Brakes11.1%
- Windscreen, wipers and mirrors8%
- Body, chassis and structure5.3%
- Tyres5.3%
- Exhaust, emissions and leaks3.9%
Average for cars of the same age and mileage
Top failures
Coil spring fractured or broken 3.81%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Rigid brake pipe excessively corroded 3.63%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Shock absorber serious fluid leak 3.18%
A shock absorber leaking heavily has likely lost its damping, so the car will handle and brake less safely.
Windscreen washer fluid insufficient 3.04%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Suspension ball joint excessively worn 3%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
CV joint boot split or insecure 2.87%
A split CV boot lets dirt in and grease out, so the joint wears and may need full replacement.
Common advisories
Brake pipes corroded and greasy (20.74%) · Tyre worn close to legal limit (13.73%) · Tyre slightly damaged or cracking (11.43%) · Brake disc pitted or scored (9.75%) · Brake pads wearing thin (6.58%) · Shock absorber light oil misting (6.41%)
Other years
Every Mercedes-Benz A-Class year
The full picture: Mercedes-Benz A-Class reliability. Before you pay for any Mercedes-Benz A-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 A-Class reliable?
2009 Mercedes-Benz A-Classs fail 37.1% of first MOT tests, about average for its age and mileage, ranking 12 of 22 A-Class years (24,532 DVSA tests, 2022 to 2024).
What fails on a 2009 Mercedes-Benz A-Class MOT?
Most often coil spring fractured or broken (3.81% of tests), rigid brake pipe excessively corroded (3.63% of tests), shock absorber serious fluid leak (3.18% of tests).
How many miles should a 2009 Mercedes-Benz A-Class have done?
At its MOT aged about 14, a typical 2009 Mercedes-Benz A-Class shows 77,120 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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