2017 Mercedes-Benz CLA · 32,133 MOT tests
2017 Mercedes-Benz CLA reliability
2017 Mercedes-Benz CLAs fail 17.6% of first MOT tests, 9% fewer MOT fails than the average car its age and mileage, ranking 7 of 9 CLA years (32,133 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz CLAs: 17.7%)
- 17.6%
- first-time fail rate (all Mercedes-Benz CLAs: 17.7%)
- fails than cars of the same age and mileage
- 9% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 6
- 53,825
- typical miles at its MOT, aged about 6
- MOT tests, 2022 to 2024
- 32,133
- MOT tests, 2022 to 2024
Year on year
2017 against the years either side
- 2016 cars: 14% fewer MOT fails than the average car its age (the 2017 car does worse)
- 2018 cars: 4% fewer MOT fails than the average car its age (the 2017 car does better)
- Weak spot: wheels, 1.1% of tests fail here (287% above cars of the same age and mileage).
- Strong point: lights and electrics, 57% fewer fails than comparable cars.
- Plates: a 2017 car carries a 66 plate (January–February 2017), or a 17 plate (March–August 2017), or a 67 plate (September–December 2017).
Common problems
What fails on a 2017 Mercedes-Benz CLA
Fail rate by area
- Tyres8.5%
- Windscreen, wipers and mirrors3.1%
- Brakes2.9%
- Lights and electrics2.3%
- Suspension2.1%
- Exhaust, emissions and leaks1.8%
- Wheels1.1%
Average for cars of the same age and mileage
Top failures
Tyre ply or cords exposed 2.03%
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 1.99%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre cut reaching ply or cords 1.57%
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 1.34%
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 1.27%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Coil spring fractured or broken 1.02%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Common advisories
Tyre worn close to legal limit (13.2%) · Brake pads wearing thin (7.1%) · Brake disc pitted or scored (5.52%) · Tyre slightly damaged or cracking (5.34%) · Brake discs showing some wear (2.71%) · Tyre has a shallow cut (2.21%)
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 2017 Mercedes-Benz CLA reliable?
2017 Mercedes-Benz CLAs fail 17.6% of first MOT tests, 9% fewer MOT fails than the average car its age and mileage, ranking 7 of 9 CLA years (32,133 DVSA tests, 2022 to 2024).
What fails on a 2017 Mercedes-Benz CLA MOT?
Most often tyre ply or cords exposed (2.03% of tests), tyre tread below 1.6mm (1.99% of tests), tyre cut reaching ply or cords (1.57% of tests).
How many miles should a 2017 Mercedes-Benz CLA have done?
At its MOT aged about 6, a typical 2017 Mercedes-Benz CLA shows 53,825 miles. Much higher or lower is worth asking about.
What plate is a 2017 car?
A car first registered in 2017 carries a 66 plate (January–February 2017), or a 17 plate (March–August 2017), or a 67 plate (September–December 2017).
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