2018 Mercedes-Benz CLS · 3,634 MOT tests
2018 Mercedes-Benz CLS reliability
2018 Mercedes-Benz CLSs fail 14.7% of first MOT tests, 5% fewer MOT fails than the average car its age and mileage, ranking 14 of 15 CLS years (3,634 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz CLSs: 24%)
- 14.7%
- first-time fail rate (all Mercedes-Benz CLSs: 24%)
- fails than cars of the same age and mileage
- 5% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 5
- 38,907
- typical miles at its MOT, aged about 5
- MOT tests, 2022 to 2024
- 3,634
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 7% fewer MOT fails than the average car its age (the 2018 car does worse)
- 2019 cars: 9% more MOT fails than the average car its age (the 2018 car does better)
- Weak spot: wheels, 2.6% of tests fail here (1151% above cars of the same age and mileage).
- Strong point: windscreen, wipers and mirrors, 70% fewer fails than comparable cars.
- Plates: a 2018 car carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
Common problems
What fails on a 2018 Mercedes-Benz CLS
Fail rate by area
- Tyres7.9%
- Wheels2.6%
- Suspension2%
- Brakes1.3%
- Lights and electrics1.2%
- Windscreen, wipers and mirrors1%
- Exhaust, emissions and leaks1%
Average for cars of the same age and mileage
Top failures
Tyre ply or cords exposed 1.95%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Road wheel fractured or welded defect 1.93%
A fractured wheel can fail suddenly and cause loss of control, so it must be replaced before driving.
Tyre cut reaching ply or cords 1.71%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Tyre bulge from structural failure 1.71%
A bulge means the tyre's structure has failed and it could burst suddenly, so it must be replaced at once.
Suspension ball joint excessively worn 1.6%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Tyre tread below 1.6mm 0.96%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Common advisories
Tyre worn close to legal limit (9.16%) · Brake pads wearing thin (5.09%) · Suspension ball joint slight play (3.27%) · Tyre slightly damaged or cracking (2.81%) · Brake disc pitted or scored (2.2%) · Brake discs showing some wear (2.06%)
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 2018 Mercedes-Benz CLS reliable?
2018 Mercedes-Benz CLSs fail 14.7% of first MOT tests, 5% fewer MOT fails than the average car its age and mileage, ranking 14 of 15 CLS years (3,634 DVSA tests, 2022 to 2024).
What fails on a 2018 Mercedes-Benz CLS MOT?
Most often tyre ply or cords exposed (1.95% of tests), road wheel fractured or welded defect (1.93% of tests), tyre cut reaching ply or cords (1.71% of tests).
How many miles should a 2018 Mercedes-Benz CLS have done?
At its MOT aged about 5, a typical 2018 Mercedes-Benz CLS shows 38,907 miles. Much higher or lower is worth asking about.
What plate is a 2018 car?
A car first registered in 2018 carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
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