SMART FORFOUR MOT pass rate
79.6% of 33,784 SMART FORFOUR MOT tests pass.
The FORFOUR's pass rate of 79.6% is in line with the average across all SMART models, at 79.0%.
The SMART FORFOUR's pass rate of 79.6% is in line with the national average for cars, at 79.2%.
Own this SMART FORFOUR?
This is the average across every SMART FORFOUR in the dataset. Look up your own registration for its actual MOT history, and a free place to keep its maintenance records.
How to check and keep your SMART’s service history →
Pass rate by vehicle age
Pass rate drops sharply with age: the SMART FORFOUR tested at 3–6 years pass 87.0% of the time, compared with just 65.5% at 15+ years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | no tests recorded | 0 | no reading |
| 3–6 years | 87.0% | 6,213 | 28,014 miles |
| 6–10 years | 79.2% | 24,957 | 43,904 miles |
| 10–15 years | too few tests (24) | 24 | no reading |
| 15+ years | 65.5% | 2,590 | 100,551 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 35.5% of failed tests, most often logged as "Not working".
| Category | Share of failed tests | Example |
|---|---|---|
| Lamps, reflectors and electrical equipment | 35.5% | Not working |
| Tyres | 33.0% | Tread depth below requirements of 1.6mm |
| Suspension | 26.0% | Ball joint excessively worn |
| Visibility | 21.0% | Does not clear the windscreen effectively |
| Noise, emissions and leaks | 19.5% | Lambda reading after 2nd fast idle outside specified limits |
| Brakes | 16.7% | Less than 1.5 mm thick |
| Body, chassis, structure | 7.5% | Has a major leak of exhaust gases |
| Steering | 2.9% | Ball joint has excessive play |
| Identification of the vehicle | 1.2% | Does not conform to the specified requirements |
| Seat belts and supplementary restraint systems | 1.1% | Warning lamp indicates a fault |
Related SMART models
- SMART FORTWO — 84.8% pass rate
- SMART FORTWO COUPE — 72.9% pass rate
- SMART CITY COUPE — 68.4% pass rate
- SMART FORTWO CABRIOLET — 74.9% pass rate
- SMART ROADSTER 80 AUTO(RHD) — 74.4% pass rate
- SMART CABRIOLET — 71.2% pass rate
Frequently asked questions
- What is the MOT pass rate for the SMART FORFOUR?
- 79.6% of SMART FORFOUR MOT tests pass, based on 33,784 tests in the DVSA anonymised MOT tests and results dataset.
- What are the most common MOT failures for the SMART FORFOUR?
- The most common reason the SMART FORFOUR fails its MOT is lamps, reflectors and electrical equipment — present in 35.5% of failed tests, most often logged as "Not working".
- Does this show the SMART FORFOUR's service history?
- No — this is MOT test data, which covers roadworthiness, not servicing. A service history is a separate record of maintenance work, which a specific car only has if its owner has kept it. See the SMART service history guide for how to check and keep one.