General Motors Common MOT Problems (2026)
Every General Motors model ranked by MOT fail rate, with the most common issues identified for each. Based on 644 real MOT tests.
Average General Motors MOT pass rate: 90%
Check Your General Motors's MOT History
See the specific issues found on your car, plus health score and running cost estimates.
90%
Avg pass rate
10%
Avg fail rate
3
Models tested
General Motors Models with the Most MOT Problems
Highest average fail rates across all tested years
| # | Model | Fail Rate | Common Issues | |
|---|---|---|---|---|
| 1 | General Motors Cadillac | 20% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 2 | General Motors Unclassified | 4% | Suspension wear, Brake disc corrosion, Lighting defects | |
| 3 | General Motors Chevrolet | 2% | Suspension wear, Brake disc corrosion, Structural corrosion |
Most Reliable General Motors Models
Lowest average fail rates; the General Motors models least likely to have MOT problems
| # | Model | Pass Rate | |
|---|---|---|---|
| 1 | General Motors Chevrolet | 98% | |
| 2 | General Motors Unclassified | 96% | |
| 3 | General Motors Cadillac | 79% |
All General Motors Models by Fail Rate
Every General Motors model and year combination, sorted by fail rate (highest first)
| Model | Year | Pass Rate | Fail Rate | |
|---|---|---|---|---|
| Cadillac | 2006 | 69% | 31% | |
| Cadillac | 2008 | 73% | 27% | |
| Cadillac | 2010 | 80% | 18% | |
| Cadillac | 2009 | 87% | 13% | |
| Cadillac | 2007 | 86% | 12% | |
| Unclassified | 2018 | 92% | 8% | |
| Chevrolet | 2014 | 98% | 2% | |
| Unclassified | 2019 | 100% | 0% |
General Motors MOT FAQ
What are the most common MOT problems on General Motors cars?
The most common MOT problems on General Motors cars vary by model and age, but typically include lighting defects, suspension wear, brake component deterioration, and tyre condition issues. Older General Motors diesels are more prone to exhaust and emissions failures. The Cadillac has the highest average fail rate at 20%.
Which General Motors model is the most reliable?
The most reliable General Motors model in our data is the Chevrolet with an average MOT pass rate of 98%. View all General Motors models for full reliability data.
What is the average MOT pass rate for General Motors?
The average MOT pass rate for General Motors is 90%, based on 644 MOT tests across 3 models. This means about 10% of General Motors cars fail their MOT on the first attempt.
Check a Specific General Motors
Enter any reg plate to see the individual MOT history, defects found, health score, and running cost estimate for that specific car.