2014 Mercedes-Benz S-Class · 6,801 MOT tests
2014 Mercedes-Benz S-Class reliability
2014 Mercedes-Benz S-Classs fail 11.7% of first MOT tests, 59% fewer MOT fails than the average car its age and mileage, ranking 2 of 21 S-Class years (6,801 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
- 59% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 9
- 80,173
- typical miles at its MOT, aged about 9
- MOT tests, 2022 to 2024
- 6,801
- MOT tests, 2022 to 2024
Year on year
2014 against the years either side
- 2013 cars: 43% fewer MOT fails than the average car its age (the 2014 car does better)
- 2015 cars: 54% fewer MOT fails than the average car its age (the 2014 car does better)
- Weak spot: seat belts and airbags, 1% of tests fail here (30% above cars of the same age and mileage).
- Strong point: lights and electrics, 86% fewer fails than comparable cars.
- Plates: a 2014 car carries a 63 plate (January–February 2014), or a 14 plate (March–August 2014), or a 64 plate (September–December 2014).
Common problems
What fails on a 2014 Mercedes-Benz S-Class
Fail rate by area
- Tyres4.7%
- Suspension2.6%
- Exhaust, emissions and leaks1.7%
- Lights and electrics1.5%
- Windscreen, wipers and mirrors1.5%
- Brakes1.2%
- Seat belts and airbags1%
Average for cars of the same age and mileage
Top failures
Tyre tread below 1.6mm 1.43%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Suspension ball joint excessively worn 1.35%
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
Tyre ply or cords exposed 0.93%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Diesel engine warning light faulty 0.79%
A lit or non-working engine warning light can hide faults, so diagnosis is needed before buying.
Tyre cut reaching ply or cords 0.75%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Windscreen washer fluid insufficient 0.59%
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 (10.47%) · Brake disc pitted or scored (3.73%) · Suspension ball joint slight play (3.54%) · Brake pads wearing thin (3.18%) · Brake discs showing some wear (2.63%) · Tyre worn close to legal limit (1.46%)
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 2014 Mercedes-Benz S-Class reliable?
2014 Mercedes-Benz S-Classs fail 11.7% of first MOT tests, 59% fewer MOT fails than the average car its age and mileage, ranking 2 of 21 S-Class years (6,801 DVSA tests, 2022 to 2024).
What fails on a 2014 Mercedes-Benz S-Class MOT?
Most often tyre tread below 1.6mm (1.43% of tests), suspension ball joint excessively worn (1.35% of tests), tyre ply or cords exposed (0.93% of tests).
How many miles should a 2014 Mercedes-Benz S-Class have done?
At its MOT aged about 9, a typical 2014 Mercedes-Benz S-Class shows 80,173 miles. Much higher or lower is worth asking about.
What plate is a 2014 car?
A car first registered in 2014 carries a 63 plate (January–February 2014), or a 14 plate (March–August 2014), or a 64 plate (September–December 2014).
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