MERCEDES-BENZ SL MOT Pass Rate
87.1% of 8,352 MERCEDES-BENZ SL MOT tests pass.
The SL has a pass rate of 87.1%, a little higher than the average across all MERCEDES-BENZ models (82.8%).
The MERCEDES-BENZ SL passes its MOT 87.1% 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 96.9% at 3–6 years to 84.8% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | no tests recorded | 0 | no reading |
| 3–6 years | 96.9% | 191 | 23,954 miles |
| 6–10 years | 93.4% | 1,201 | 38,404 miles |
| 10–15 years | 88.9% | 1,485 | 53,089 miles |
| 15+ years | 84.8% | 5,475 | 81,905 miles |
Common MOT failure reasons for the MERCEDES-BENZ SL
The most common reason the MERCEDES-BENZ SL fails its MOT is lamps, reflectors and electrical equipment — present in 41.8% of failed tests, most often logged as "not working".
| Category | Share of failed tests | Example |
|---|---|---|
| Lamps, reflectors and electrical equipment | 41.8% | not working |
| Suspension | 30.8% | ball joint dust cover no longer prevents the ingress of dirt |
| Tyres | 23.7% | has a cut in excess of the requirements deep enough to reach the ply or cords |
| Brakes | 21.6% | excessively corroded |
| Noise, emissions and leaks | 12.6% | inoperative or indicates a malfunction |
| Visibility | 11.1% | does not clear the windscreen effectively |
| Body, chassis, structure | 4.9% | has a major leak of exhaust gases |
| Steering | 4.6% | ball joint has excessive play |
| Road Wheels | 3.3% | fixing missing |
| Seat belts and supplementary restraint systems | 2.9% | warning lamp indicates a fault |
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