2017 Mercedes-Benz S-Class · 10,317 MOT tests
2017 Mercedes-Benz S-Class reliability
2017 Mercedes-Benz S-Classs fail 10.2% of first MOT tests, 48% fewer MOT fails than the average car its age and mileage, ranking 7 of 21 S-Class years (10,317 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz S-Classs: 15.8%)
- 10.2%
- first-time fail rate (all Mercedes-Benz S-Classs: 15.8%)
- fails than cars of the same age and mileage
- 48% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 6
- 53,957
- typical miles at its MOT, aged about 6
- MOT tests, 2022 to 2024
- 10,317
- MOT tests, 2022 to 2024
Year on year
2017 against the years either side
- 2016 cars: 48% fewer MOT fails than the average car its age (the 2017 car does better)
- 2018 cars: 60% fewer MOT fails than the average car its age (the 2017 car does worse)
- Strong point: lights and electrics, 84% 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 S-Class
Fail rate by area
- Tyres4.3%
- Suspension2.5%
- Windscreen, wipers and mirrors1.4%
- Brakes1%
- Lights and electrics1%
- Exhaust, emissions and leaks1%
- Wheels0.6%
Average for cars of the same age and mileage
Top failures
Suspension ball joint excessively worn 1.85%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Tyre tread below 1.6mm 1.49%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre cut reaching ply or cords 0.86%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Tyre ply or cords exposed 0.78%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Windscreen washer fluid insufficient 0.61%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Diesel engine warning light faulty 0.47%
A lit or non-working engine warning light can hide faults, so diagnosis is needed before buying.
Common advisories
Tyre worn close to legal limit (10.02%) · Brake pads wearing thin (3.71%) · Suspension ball joint slight play (3.48%) · Brake disc pitted or scored (2.82%) · Brake discs showing some wear (1.81%) · Tyre worn close to legal limit (1.6%)
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 2017 Mercedes-Benz S-Class reliable?
2017 Mercedes-Benz S-Classs fail 10.2% of first MOT tests, 48% fewer MOT fails than the average car its age and mileage, ranking 7 of 21 S-Class years (10,317 DVSA tests, 2022 to 2024).
What fails on a 2017 Mercedes-Benz S-Class MOT?
Most often suspension ball joint excessively worn (1.85% of tests), tyre tread below 1.6mm (1.49% of tests), tyre cut reaching ply or cords (0.86% of tests).
How many miles should a 2017 Mercedes-Benz S-Class have done?
At its MOT aged about 6, a typical 2017 Mercedes-Benz S-Class shows 53,957 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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