2009 Mercedes-Benz CLS · 3,979 MOT tests
2009 Mercedes-Benz CLS reliability
2009 Mercedes-Benz CLSs fail 35.5% of first MOT tests, 15% fewer MOT fails than the average car its age and mileage, ranking 12 of 15 CLS years (3,979 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz CLSs: 24%)
- 35.5%
- first-time fail rate (all Mercedes-Benz CLSs: 24%)
- fails than cars of the same age and mileage
- 15% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 13
- 108,251
- typical miles at its MOT, aged about 13
- MOT tests, 2022 to 2024
- 3,979
- MOT tests, 2022 to 2024
Year on year
2009 against the years either side
- 2008 cars: 20% fewer MOT fails than the average car its age (the 2009 car does worse)
- 2010 cars: 17% fewer MOT fails than the average car its age (the 2009 car does worse)
- Weak spot: wheels, 1.1% of tests fail here (64% above cars of the same age and mileage).
- Strong point: body, chassis and structure, 71% 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 CLS
Fail rate by area
- Suspension12.5%
- Lights and electrics10.9%
- Brakes10.9%
- Tyres10.6%
- Windscreen, wipers and mirrors5.8%
- Steering3.6%
- Exhaust, emissions and leaks3.5%
Average for cars of the same age and mileage
Top failures
Suspension ball joint excessively worn 4.55%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Rigid brake pipe excessively corroded 4.5%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Coil spring fractured or broken 3.95%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Tyre ply or cords exposed 3.49%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre tread below 1.6mm 3.29%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Windscreen washer fluid insufficient 2.39%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Common advisories
Tyre worn close to legal limit (18.72%) · Brake pipes corroded and greasy (15.13%) · Engine oil leak, not excessive (7.99%) · Brake disc pitted or scored (6.89%) · Brake pads wearing thin (6.53%) · Suspension ball joint slight play (5.86%)
Other years
Every Mercedes-Benz CLS year
The full picture: Mercedes-Benz CLS reliability. Before you pay for any Mercedes-Benz CLS, 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 CLS reliable?
2009 Mercedes-Benz CLSs fail 35.5% of first MOT tests, 15% fewer MOT fails than the average car its age and mileage, ranking 12 of 15 CLS years (3,979 DVSA tests, 2022 to 2024).
What fails on a 2009 Mercedes-Benz CLS MOT?
Most often suspension ball joint excessively worn (4.55% of tests), rigid brake pipe excessively corroded (4.5% of tests), coil spring fractured or broken (3.95% of tests).
How many miles should a 2009 Mercedes-Benz CLS have done?
At its MOT aged about 13, a typical 2009 Mercedes-Benz CLS shows 108,251 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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