Mercedes-Benz E-Class W212: best and worst years, and what goes wrong
How every year of the Mercedes-Benz E-Class W212 did at its MOT in 2025 compared with other cars the same age, the weak spots that keep coming up, and what to check before you buy one. From 120,847 MOT tests.
Year by year
First-time MOT pass rate for each year of the Mercedes-Benz E-Class W212, against all cars registered the same year. Older cars fail more, so the comparison with cars the same age is what matters.
| Year | Pass first time | All cars that year | Stands out | MOT tests |
|---|---|---|---|---|
| 2009* | 70% | 58% +12 | Rigid brake pipes 3× usual | 6,066 |
| 2010 | 69% | 59% +10 | Rigid brake pipes 3.1× usual | 10,492 |
| 2011 | 70% | 61% +9 | Rigid brake pipes 3.4× usual | 12,480 |
| 2012 | 69% | 63% +6 | Rigid brake pipes 4.1× usual | 13,731 |
| 2013 | 71% | 66% +5 | Rigid brake pipes 4.2× usual | 17,906 |
| 2014 | 75% | 69% +6 | Rigid brake pipes 3.5× usual | 19,480 |
| 2015 | 78% | 72% +6 | Wheel bearings 6.6× usual | 20,740 |
| 2016* | 81% | 75% +6 | Wheel bearings 4.7× usual | 19,952 |
Weak spots across the Mercedes-Benz E-Class W212
Parts flagged at MOT well above the usual rate for cars the same age, in more than one year of this generation. Repeat findings like these are much less likely to be chance.
- Wheel bearingsup to 6.6× usual
Stands out in 6 years: 2015, 2014, 2013, 2012, 2011, 2010.
Rough price £120–£300 (one bearing) ClickMechanicAt the viewing: Listen for a hum or growl that changes as you steer at speed.
- Link ball joint coversup to 4.4× usual
Stands out in 6 years: 2015, 2014, 2013, 2012, 2011, 2010.
Rough price £60–£150 (one joint) ClickMechanicAt the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.
- Rigid brake pipesup to 4.2× usual
Stands out in 5 years: 2014, 2013, 2012, 2011, 2010.
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.
- Engine warning lightup to 2.1× usual
Stands out in 2 years: 2015, 2012.
Rough price £10–£80 our estimateAt the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.
Known faults
From owners, mechanics and UK buying guides, in our own words. Not every car will have them.
- Timing chains on diesels
The diesel timing chains won't last forever. A rattle on start-up is the warning sign.
Check: Start the engine from cold and listen for a rattle.
- Water pump and coolant leaks
The water pump is a common failure, and diesels can leak coolant around the EGR cooler.
Check: Listen for whining from the engine, and look for dried coolant around it.
If it needs doing: Water pump, about £115–£375. ClickMechanic
- 7G-Tronic automatic
The automatic gearbox needs looking after.
Check: Check the changes are smooth with no odd noises, and look for gearbox servicing in the history.
If it needs doing: Gearbox sensor or solenoid, about £200–£500. ClickMechanic
Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting each car's main test of the year (not retests). A weak spot needs at least 30 cars flagged and must stay 1.5× the usual rate even at the cautious end of a 95% confidence range. Generation years are approximate: cars registered in a changeover year (*) can be either generation. How we score
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