2009 Mercedes-Benz SLK · 9,159 MOT tests
2009 Mercedes-Benz SLK reliability
2009 Mercedes-Benz SLKs fail 29.5% of first MOT tests, 17% fewer MOT fails than the average car its age and mileage, ranking 16 of 20 SLK years (9,159 DVSA tests, 2022 to 2024).
Looking at a 2009 Mercedes-Benz SLK?
See its own MOT history and mileage, free.
- first-time fail rate (all Mercedes-Benz SLKs: 25.9%)
- 29.5%
- first-time fail rate (all Mercedes-Benz SLKs: 25.9%)
- fails than cars of the same age and mileage
- 17% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 14
- 64,966
- typical miles at its MOT, aged about 14
- MOT tests, 2022 to 2024
- 9,159
- MOT tests, 2022 to 2024
Year on year
2009 against the years either side
- 2008 cars: 23% fewer MOT fails than the average car its age (the 2009 car does worse)
- 2010 cars: 15% fewer MOT fails than the average car its age (the 2009 car does better)
- Weak spot: seat belts and airbags, 1.3% of tests fail here (15% above cars of the same age and mileage).
- Strong point: body, chassis and structure, 79% 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 SLK
Fail rate by area
- Suspension14.2%
- Lights and electrics7.8%
- Brakes7.5%
- Tyres5.8%
- Windscreen, wipers and mirrors3.4%
- Exhaust, emissions and leaks1.7%
- Seat belts and airbags1.3%
Average for cars of the same age and mileage
Top failures
Coil spring fractured or broken 6.35%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Suspension ball joint excessively worn 4.19%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Rigid brake pipe excessively corroded 2.11%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Parking brake efficiency below minimum 1.78%
The parking brake holds the car less well than required, so it may roll on a slope and needs repair.
Tyre tread below 1.6mm 1.69%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 1.23%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Common advisories
Tyre worn close to legal limit (11.7%) · Brake pipes corroded and greasy (11.7%) · Tyre slightly damaged or cracking (6.37%) · Brake disc pitted or scored (5.86%) · Suspension arm pin/bush showing wear (4.32%) · Exhaust has minor gas leak (4.03%)
Other years
Every Mercedes-Benz SLK year
The full picture: Mercedes-Benz SLK reliability. Before you pay for any Mercedes-Benz SLK, 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 SLK reliable?
2009 Mercedes-Benz SLKs fail 29.5% of first MOT tests, 17% fewer MOT fails than the average car its age and mileage, ranking 16 of 20 SLK years (9,159 DVSA tests, 2022 to 2024).
What fails on a 2009 Mercedes-Benz SLK MOT?
Most often coil spring fractured or broken (6.35% of tests), suspension ball joint excessively worn (4.19% of tests), rigid brake pipe excessively corroded (2.11% of tests).
How many miles should a 2009 Mercedes-Benz SLK have done?
At its MOT aged about 14, a typical 2009 Mercedes-Benz SLK shows 64,966 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).
Check a 2009 Mercedes-Benz SLK free
MOT history, mileage record, ULEZ, tax and recalls on any UK car, in seconds. No sign-up, no card.