Audi Q7 vs Mercedes-Benz Ml
On MOT-testable defects, the Audi Q7 (fail rate 13.6%) performed better than the Mercedes-Benz Ml (19.6%) across comparable years. The biggest divergence was lighting & signalling, where the Ml recorded failures more often.
13.6%
Q7 fail rate
19.6%
Ml fail rate
5.94pp
Difference
Side by side
| Metric | Audi Q7 | Mercedes-Benz Ml |
|---|---|---|
| MOT tests analysed | 240,574 | 214,052 |
| Pass rate | 86.4% | 80.4% |
| Fail rate | 13.6% | 19.6% |
Where they differ
| Category | Q7 | Ml |
|---|---|---|
| Lighting & signalling | 4.1% | 10.9% |
| Brakes | 3.3% | 7.2% |
| Emissions & environmental | 0.0% | 3.4% |
| Suspension | 3.4% | 6.7% |
| Visibility | 2.3% | 0.0% |
| Tyres | 5.8% | 4.6% |
Methodology & source. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.