2018 Mercedes-Benz CLA · 31,992 MOT tests
2018 Mercedes-Benz CLA reliability
2018 Mercedes-Benz CLAs fail 15.4% of first MOT tests, 4% fewer MOT fails than the average car its age and mileage, ranking 8 of 9 CLA years (31,992 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz CLAs: 17.7%)
- 15.4%
- first-time fail rate (all Mercedes-Benz CLAs: 17.7%)
- fails than cars of the same age and mileage
- 4% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 5
- 41,896
- typical miles at its MOT, aged about 5
- MOT tests, 2022 to 2024
- 31,992
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 9% fewer MOT fails than the average car its age (the 2018 car does worse)
- 2019 cars: about average for its age (the 2018 car does better)
- Weak spot: wheels, 1% of tests fail here (331% above cars of the same age and mileage).
- Strong point: lights and electrics, 39% 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 CLA
Fail rate by area
- Tyres7.9%
- Windscreen, wipers and mirrors3%
- Brakes2.4%
- Lights and electrics2.4%
- Exhaust, emissions and leaks1.1%
- Wheels1%
- Suspension0.7%
Average for cars of the same age and mileage
Top failures
Tyre tread below 1.6mm 1.82%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 1.79%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre cut reaching ply or cords 1.58%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Brake pads worn below 1.5mm 1.17%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Windscreen washer fluid insufficient 1.07%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Tyre bulge from structural failure 0.97%
A bulge means the tyre's structure has failed and it could burst suddenly, so it must be replaced at once.
Common advisories
Tyre worn close to legal limit (12.48%) · Brake pads wearing thin (6.32%) · Tyre slightly damaged or cracking (5.74%) · Brake disc pitted or scored (4.39%) · Tyre has a shallow cut (2.43%) · Brake discs showing some wear (2.39%)
Other years
Every Mercedes-Benz CLA year
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Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2018 Mercedes-Benz CLA reliable?
2018 Mercedes-Benz CLAs fail 15.4% of first MOT tests, 4% fewer MOT fails than the average car its age and mileage, ranking 8 of 9 CLA years (31,992 DVSA tests, 2022 to 2024).
What fails on a 2018 Mercedes-Benz CLA MOT?
Most often tyre tread below 1.6mm (1.82% of tests), tyre ply or cords exposed (1.79% of tests), tyre cut reaching ply or cords (1.58% of tests).
How many miles should a 2018 Mercedes-Benz CLA have done?
At its MOT aged about 5, a typical 2018 Mercedes-Benz CLA shows 41,896 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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