MERCEDES-BENZ B MOT Pass Rate
93.9% of 2,394 MERCEDES-BENZ B MOT tests pass.
The B passes its MOT 93.9% of the time — well above the average across all MERCEDES-BENZ models, which sits at 82.8%.
The MERCEDES-BENZ B passes its MOT 93.9% of the time — well above the national average for cars, which sits at 78.3%.
Pass rate by vehicle age
Pass rate drops sharply with age: the MERCEDES-BENZ B tested at 0–3 years pass 97.7% of the time, compared with just 77.4% at 10–15 years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | 97.7% | 43 | 27,140 miles |
| 3–6 years | 94.2% | 2,289 | 29,870 miles |
| 6–10 years | too few tests (26) | 26 | no reading |
| 10–15 years | 77.4% | 31 | 55,862 miles |
| 15+ years | too few tests (5) | 5 | no reading |
Common MOT failure reasons for the MERCEDES-BENZ B
The most common reason the MERCEDES-BENZ B fails its MOT is tyres — present in 42.9% of failed tests, most often logged as "has a cut in excess of the requirements deep enough to reach the ply or cords".
| Category | Share of failed tests | Example |
|---|---|---|
| Tyres | 42.9% | has a cut in excess of the requirements deep enough to reach the ply or cords |
| Lamps, reflectors and electrical equipment | 22.8% | too low |
| Visibility | 15.5% | does not clear the windscreen effectively |
| Brakes | 11.4% | less than 1.5 mm thick |
| Suspension | 8.7% | ball joint excessively worn |
| Seat belts and supplementary restraint systems | 8.7% | warning lamp indicates a fault |
| Noise, emissions and leaks | 3.7% | inoperative or indicates a malfunction |
| Body, chassis, structure | 2.3% | constant velocity boot split or insecure, no longer prevents the ingress of dirt |
| Identification of the vehicle | 1.4% | does not conform to the specified requirements |
| Road Wheels | 0.9% | fractured |
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