2015 Mercedes-Benz S-Class · 9,349 MOT tests
2015 Mercedes-Benz S-Class reliability
2015 Mercedes-Benz S-Classs fail 11.7% of first MOT tests, 54% fewer MOT fails than the average car its age and mileage, ranking 5 of 21 S-Class years (9,349 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz S-Classs: 15.8%)
- 11.7%
- first-time fail rate (all Mercedes-Benz S-Classs: 15.8%)
- fails than cars of the same age and mileage
- 54% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 8
- 70,311
- typical miles at its MOT, aged about 8
- MOT tests, 2022 to 2024
- 9,349
- MOT tests, 2022 to 2024
Year on year
2015 against the years either side
- 2014 cars: 59% fewer MOT fails than the average car its age (the 2015 car does worse)
- 2016 cars: 48% fewer MOT fails than the average car its age (the 2015 car does better)
- Weak spot: seat belts and airbags, 1% of tests fail here (60% above cars of the same age and mileage).
- Strong point: brakes, 79% fewer fails than comparable cars.
- Plates: a 2015 car carries a 64 plate (January–February 2015), or a 15 plate (March–August 2015), or a 65 plate (September–December 2015).
Common problems
What fails on a 2015 Mercedes-Benz S-Class
Fail rate by area
- Tyres4.3%
- Suspension2.6%
- Lights and electrics2.1%
- Windscreen, wipers and mirrors1.4%
- Exhaust, emissions and leaks1.2%
- Brakes1.1%
- Seat belts and airbags1%
Average for cars of the same age and mileage
Top failures
Suspension ball joint excessively worn 1.84%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Tyre tread below 1.6mm 1.35%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 0.87%
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 0.67%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Road wheel fractured or welded defect 0.59%
A fractured wheel can fail suddenly and cause loss of control, so it must be replaced before driving.
Windscreen washer fluid insufficient 0.5%
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 (9.61%) · Suspension ball joint slight play (4.16%) · Brake pads wearing thin (3.57%) · Brake disc pitted or scored (3.26%) · Brake discs showing some wear (2.26%) · Tyre worn close to legal limit (1.49%)
Other years
Every Mercedes-Benz S-Class year
The full picture: Mercedes-Benz S-Class reliability. Before you pay for any Mercedes-Benz S-Class, 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 2015 Mercedes-Benz S-Class reliable?
2015 Mercedes-Benz S-Classs fail 11.7% of first MOT tests, 54% fewer MOT fails than the average car its age and mileage, ranking 5 of 21 S-Class years (9,349 DVSA tests, 2022 to 2024).
What fails on a 2015 Mercedes-Benz S-Class MOT?
Most often suspension ball joint excessively worn (1.84% of tests), tyre tread below 1.6mm (1.35% of tests), tyre ply or cords exposed (0.87% of tests).
How many miles should a 2015 Mercedes-Benz S-Class have done?
At its MOT aged about 8, a typical 2015 Mercedes-Benz S-Class shows 70,311 miles. Much higher or lower is worth asking about.
What plate is a 2015 car?
A car first registered in 2015 carries a 64 plate (January–February 2015), or a 15 plate (March–August 2015), or a 65 plate (September–December 2015).
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