Dethleffs Common MOT Problems (2026)
Every Dethleffs model ranked by MOT fail rate, with the most common issues identified for each. Based on 475 real MOT tests.
Average Dethleffs MOT pass rate: 90%
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See the specific issues found on your car, plus health score and running cost estimates.
90%
Avg pass rate
10%
Avg fail rate
2
Models tested
Dethleffs Models with the Most MOT Problems
Highest average fail rates across all tested years
| # | Model | Fail Rate | Common Issues | |
|---|---|---|---|---|
| 1 | Dethleffs Trend | 9% | DPF/emissions, Turbo issues, Suspension wear | |
| 2 | Dethleffs Unclassified | 1% | DPF/emissions, Turbo issues, Lighting defects |
Most Reliable Dethleffs Models
Lowest average fail rates; the Dethleffs models least likely to have MOT problems
| # | Model | Pass Rate | |
|---|---|---|---|
| 1 | Dethleffs Unclassified | 99% | |
| 2 | Dethleffs Trend | 88% |
All Dethleffs Models by Fail Rate
Every Dethleffs model and year combination, sorted by fail rate (highest first)
| Model | Year | Pass Rate | Fail Rate | |
|---|---|---|---|---|
| Trend | 2018 | 78% | 12% | |
| Trend | 2019 | 88% | 10% | |
| Trend | 2021 | 91% | 8% | |
| Trend | 2020 | 95% | 5% | |
| Unclassified | 2019 | 99% | 1% | |
| Unclassified | 2020 | 99% | 0% |
Dethleffs MOT FAQ
What are the most common MOT problems on Dethleffs cars?
The most common MOT problems on Dethleffs cars vary by model and age, but typically include lighting defects, suspension wear, brake component deterioration, and tyre condition issues. Older Dethleffs diesels are more prone to exhaust and emissions failures. The Trend has the highest average fail rate at 9%.
Which Dethleffs model is the most reliable?
The most reliable Dethleffs model in our data is the Unclassified with an average MOT pass rate of 99%. View all Dethleffs models for full reliability data.
What is the average MOT pass rate for Dethleffs?
The average MOT pass rate for Dethleffs is 90%, based on 475 MOT tests across 2 models. This means about 10% of Dethleffs cars fail their MOT on the first attempt.
Check a Specific Dethleffs
Enter any reg plate to see the individual MOT history, defects found, health score, and running cost estimate for that specific car.