SMART FORFOUR MOT Pass Rate
79.1% of 8,062 SMART FORFOUR MOT tests pass.
The FORFOUR's pass rate of 79.1% is in line with the average across all SMART models, at 78.1%.
The SMART FORFOUR's pass rate of 79.1% is in line with the national average for cars, at 78.3%.
Pass rate by vehicle age
Pass rate drops sharply with age: the SMART FORFOUR tested at 3–6 years pass 89.0% of the time, compared with just 64.4% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | no tests recorded | 0 | no reading |
| 3–6 years | 89.0% | 697 | 30,114 miles |
| 6–10 years | 79.2% | 6,829 | 46,167 miles |
| 10–15 years | too few tests (2) | 2 | no reading |
| 15+ years | 64.4% | 534 | 99,665 miles |
Common MOT failure reasons for the SMART FORFOUR
The most common reason the SMART FORFOUR fails its MOT is lamps, reflectors and electrical equipment — present in 36.5% of failed tests, most often logged as "not working".
| Category | Share of failed tests | Example |
|---|---|---|
| Lamps, reflectors and electrical equipment | 36.5% | not working |
| Tyres | 31.8% | tread depth below requirements of 1.6mm |
| Suspension | 27.9% | ball joint excessively worn |
| Noise, emissions and leaks | 21.0% | Lambda reading after 2nd fast idle outside specified limits |
| Visibility | 21.0% | does not clear the windscreen effectively |
| Brakes | 14.6% | less than 1.5 mm thick |
| Body, chassis, structure | 7.7% | has a major leak of exhaust gases |
| Steering | 3.6% | ball joint has excessive play |
| Seat belts and supplementary restraint systems | 0.9% | warning lamp indicates a fault |
| Identification of the vehicle | 0.9% | inscription illegible |
Related SMART models
- SMART FORTWO — 84.2% pass rate
- SMART FORTWO COUPE — 73.7% pass rate
- SMART CITY COUPE — 66.6% pass rate
- SMART FORTWO CABRIOLET — 75.1% pass rate
- SMART FORTWO PASSION MHD AUTO — 75.3% pass rate