2017 Mercedes-Benz X-Class: common problems and MOT failures
What MOT testers find on the Mercedes-Benz X-Class first registered in 2017: we looked at the 455 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.
Small sample: there were only 455 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.
Common 2017 Mercedes-Benz X-Class MOT failures and advisories
The share of 2017 Mercedes-Benz X-Class MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Brakes22% 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.
- Tyres18% 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.
- Lights and electrics15% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Suspension10% 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.
- Wipers, windscreen and mirrors9% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Oil and fluid leaks7% 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.
Questions to ask the seller before buying a 2017 Mercedes-Benz X-Class
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Can I see the service history and receipts for any big jobs?
Looking at a Mercedes-Benz X-Class?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
Every year of the Mercedes-Benz X-Class compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2020 | 1,930 | Tyres 17% |
| 2019 | 4,810 | Tyres 19% |
| 2018 | 3,838 | Brakes 20% |
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Mercedes-Benz X-Class cars first registered in 2017. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score