Mercedes-Benz X-Class reliability, MPG and running costs
Figures updated
The Mercedes-Benz X-Class is a van. In 2024 MOT tests it scored 90 for reliability (100 is average), ranking 17 of 42, and 20.8% failed first time against a UK average of 28.5%. Its most common MOT failure is malfunction indicator lamp (4.4% of tests).
Ranked 17 of 42 vans and pickups in the 2024 MOT Reliability League
In 2024, 3,810 Mercedes-Benz X-Classes aged 3 to 20 had an MOT and 20.8% failed first time (UK average 28.5%). Taking age and mileage into account, the Mercedes-Benz X-Class is 11% more likely to fail than the average car of the same age and mileage.
First-time fail rate
20.8%
UK 28.5%
Fail rate at 3 years
–
UK 12.7%
Average miles a year
12,500
Typical age at test: 5 years
Mercedes-Benz X-Class MOT failure rate by age
Most common Mercedes-Benz X-Class MOT faults
- Malfunction indicator lamp: inoperative or indicates a malfunction4.4% of tests
- SRS malfunction indicator lamp: warning lamp indicates a fault3.3% of tests
- Brake pads: less than 1.5 mm thick2.8% of tests
- Wipers: does not clear the windscreen effectively2.1% of tests
- Rbt (sp): efficiency below requirements1.7% of tests
- Tread depth: tread depth below requirements of 1.6mm1.7% of tests
What the Mercedes-Benz X-Class fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Brakes | 6.7% | ▲ 1.8× as often |
| Lights and electrics | 4.6% | ▼ 13% less often |
| Exhaust and emissions | 4.5% | ▲ 2.8× as often |
| Tyres | 4.3% | ▼ 30% less often |
| Seat belts and airbags | 3.6% | ▲ 8.4× as often |
| Visibility | 3.6% | About average |
| Body and structure | 1.7% | ▲ 2.0× as often |
| Suspension | 1.0% | ▼ 61% less often |
| Wheels | 0.2% | ▼ 19% less often |
| Steering | 0.1% | ▼ 80% less often |
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Frequently asked questions
›Is the Mercedes-Benz X-Class reliable?
Its MOT record is worse than average: the Mercedes-Benz X-Class is 11% more likely to fail than the average car of the same age and mileage, with a reliability score of 90 in our 2024 league (100 is average).
›What are common problems with the Mercedes-Benz X-Class?
The most common MOT fault is “Malfunction indicator lamp: inoperative or indicates a malfunction”, found in 4.4% of tests. It fails on seat belts and airbags and exhaust and emissions more often than similar cars.
›How many Mercedes-Benz X-Classes fail their MOT?
20.8% of Mercedes-Benz X-Classes aged 3 to 20 failed their MOT first time in 2024.
Sources: DVSA anonymised MOT tests 2024, all versions of the Mercedes-Benz X-Class combined (Open Government Licence v3.0). How we calculate the league.