Smart Common MOT Problems (2026)
Every Smart model ranked by MOT fail rate, with the most common issues identified for each. Based on 21,384 real MOT tests.
Average Smart MOT pass rate: 80%
Check Your Smart's MOT History
See the specific issues found on your car, plus health score and running cost estimates.
80%
Avg pass rate
20%
Avg fail rate
46
Models tested
Smart Models with the Most MOT Problems
Highest average fail rates across all tested years
| # | Model | Fail Rate | Common Issues | |
|---|---|---|---|---|
| 1 | Smart City Pulse 61 Semi-auto | 38% | Suspension wear, Structural corrosion, Exhaust deterioration | |
| 2 | Smart Forfour Coolstyle 90 S-a | 36% | Suspension wear, Structural corrosion, Exhaust deterioration | |
| 3 | Smart Forfour Pulse | 32% | Suspension wear, Structural corrosion, Exhaust deterioration | |
| 4 | Smart Roadster Finale Edition A | 28% | Suspension wear, Structural corrosion, Exhaust deterioration | |
| 5 | Smart City Passion 61 Auto | 26% | Suspension wear, Structural corrosion, Exhaust deterioration |
Most Reliable Smart Models
Lowest average fail rates; the Smart models least likely to have MOT problems
| # | Model | Pass Rate | |
|---|---|---|---|
| 1 | Smart Eq Fortwo Exclusive | 98% | |
| 2 | Smart Coupe | 98% | |
| 3 | Smart Eq Fortwo Brabus Line | 97% | |
| 4 | Smart Eq Fortwo Edition One | 96% | |
| 5 | Smart Eq Fortwo Prime Exclusive | 95% |
All Smart Models by Fail Rate
Every Smart model and year combination, sorted by fail rate (highest first)
Showing top 50 of 95 model/year combinations. View all Smart models
Smart MOT FAQ
What are the most common MOT problems on Smart cars?
The most common MOT problems on Smart cars vary by model and age, but typically include lighting defects, suspension wear, brake component deterioration, and tyre condition issues. Older Smart diesels are more prone to exhaust and emissions failures. The City Pulse 61 Semi-auto has the highest average fail rate at 38%.
Which Smart model is the most reliable?
The most reliable Smart model in our data is the Eq Fortwo Exclusive with an average MOT pass rate of 98%. View all Smart models for full reliability data.
What is the average MOT pass rate for Smart?
The average MOT pass rate for Smart is 80%, based on 21,384 MOT tests across 46 models. This means about 20% of Smart cars fail their MOT on the first attempt.
Smart Model Problem Guides
Detailed common problems, repair costs, and year-by-year reliability for each Smart model
Check a Specific Smart
Enter any reg plate to see the individual MOT history, defects found, health score, and running cost estimate for that specific car.