Smart reliability and common MOT problems by model
Smart shows a 19.5% combined MOT failure rate across 4,685 tests in Motintel data. Fortwo Passion Mhd Auto has one of the lower high-confidence rates at 19.0%. Roadster 80 Auto Rhd deserves extra checking at 21.1%.
Data sources: DVSA MOT records, official recall records, and MOT fault wording snapshots (2026-04-27, 2026-04-29, rfr_codes_2025-05-12, failure items 2023). Search-indexed model pages must clear 20,000 MOT tests and 10,000 vehicles.
Smart combined failure rate: 19.5% — all-model average is 18.7%.
Not enough high-confidence model reports are available yet.
Not enough high-confidence model reports are available yet.
Most reliable Smart models in MOT data
| # | Model | MOT failure rate | Tests | Vehicles |
|---|---|---|---|---|
| Not enough high-confidence model reports are available yet. | ||||
Smart models with the highest MOT failure rates
| # | Model | MOT failure rate | Tests | Vehicles |
|---|---|---|---|---|
| Not enough high-confidence model reports are available yet. | ||||
Common Smart MOT problem areas
| # | Problem area | MOT notes | Models affected | What to check | High-rate examples |
|---|---|---|---|---|---|
| Not enough high-confidence problem-area data is available yet. | |||||
All Smart model reports
| Model | MOT tests | Vehicles | Failure rate |
|---|---|---|---|
| Fortwo Passion Mhd Auto limited data | 3,438 | 2,688 | 19.0% |
| Roadster 80 Auto Rhd limited data | 1,247 | 990 | 21.1% |
Models with limited data (fewer than 20,000 tests or 10,000 vehicles) have full reports but are not indexed in search engines until the evidence threshold is met.