2010 Mercedes-Benz S-Class: common problems and what to check
What gets flagged at MOT on 2010 Mercedes-Benz S-Classs, from 773 tests in 2025, plus known faults and what to look at before you buy one.
What stands out
Parts flagged at MOT more often on 2010 Mercedes-Benz S-Classs than on all cars registered in 2010.
- Rigid brake pipes1.9× usualMercedes-Benz S-Class12.8% All 2010 cars6.8%
Failed outright at MOT: 1.7%, against 1.1% of all 2010 cars. The rest were advisories or minor defects.
Rough price £100–£400 our estimateAt the viewing: Ask to see underneath, or check the MOT advisories: corroded brake or fuel pipes get worse every year and fail the MOT when they do.
- Wheel bearings3.5× usualMercedes-Benz S-Class7% All 2010 cars2%
Failed outright at MOT: 1%, against 0.8% of all 2010 cars. The rest were advisories or minor defects.
Rough price £120–£300 (one bearing) ClickMechanicAt the viewing: Listen for a hum or growl that changes as you steer at speed.
By area
The share of 2010 Mercedes-Benz S-Class MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Brakes32% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Tyres26% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Suspension22% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Lights and electrics16% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Oil and fluid leaks9% of testsRough price £80–£600
At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.
- Wipers, windscreen and mirrors5% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
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Other years
| Year | MOT tests | Most flagged |
|---|---|---|
| 2019 | 2,195 | Tyres 19% |
| 2018 | 2,177 | Tyres 19% |
| 2017 | 2,265 | Tyres 21% |
| 2016 | 2,634 | Tyres 24% |
| 2015 | 2,124 | Tyres 23% |
| 2014 | 1,572 | Tyres 21% |
| 2013 | 946 | Brakes 27% |
| 2012 | 1,148 | Brakes 33% |
| 2011 | 883 | Brakes 32% |
| 2009 | 753 | Brakes 37% |
| 2008 | 810 | Brakes 40% |
| 2007 | 1,127 | Brakes 39% |
| 2006 | 883 | Brakes 38% |
| 2004 | 521 | Brakes 35% |
| 2003 | 522 | Brakes 34% |
Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2010 Mercedes-Benz S-Classs registered in 2010. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score