MERCEDES-BENZ S-CLASS MOT Pass Rate
87.6% of 12,924 MERCEDES-BENZ S-CLASS MOT tests pass.
The S-CLASS has a pass rate of 87.6%, a little higher than the average across all MERCEDES-BENZ models (82.8%).
The MERCEDES-BENZ S-CLASS passes its MOT 87.6% of the time — well above the national average for cars, which sits at 78.3%.
Pass rate by vehicle age
Pass rate declines noticeably with age, from 93.0% at 3–6 years to 80.0% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | too few tests (6) | 6 | no reading |
| 3–6 years | 93.0% | 1,600 | 72,394 miles |
| 6–10 years | 91.8% | 4,906 | 85,652 miles |
| 10–15 years | 86.6% | 2,900 | 103,906 miles |
| 15+ years | 80.0% | 3,512 | 115,042 miles |
Common MOT failure reasons for the MERCEDES-BENZ S-CLASS
The most common reason the MERCEDES-BENZ S-CLASS fails its MOT is suspension — present in 34.1% of failed tests, most often logged as "ball joint excessively worn".
| Category | Share of failed tests | Example |
|---|---|---|
| Suspension | 34.1% | ball joint excessively worn |
| Tyres | 33.7% | tread depth below requirements of 1.6mm |
| Brakes | 29.8% | excessively corroded |
| Lamps, reflectors and electrical equipment | 28.0% | not working |
| Noise, emissions and leaks | 14.2% | inoperative or indicates a malfunction |
| Visibility | 13.3% | provides insufficient washer liquid |
| Body, chassis, structure | 6.0% | corroded to the extent that the rigidity of the assembly is significantly reduced |
| Seat belts and supplementary restraint systems | 5.9% | warning lamp indicates a fault |
| Road Wheels | 4.2% | fixing missing |
| Identification of the vehicle | 4.1% | does not conform to the specified requirements |
Related MERCEDES-BENZ models
- MERCEDES-BENZ C — 80.1% pass rate
- MERCEDES-BENZ A-CLASS — 81.3% pass rate
- MERCEDES-BENZ E — 82.3% pass rate
- MERCEDES-BENZ A — 91.3% pass rate
- MERCEDES-BENZ VITO — 75.4% pass rate
- MERCEDES-BENZ GLC — 90.2% pass rate