Audi A6 vs Bmw 3 Series
On MOT-testable defects, the Audi A6 (fail rate 15.0%) performed better than the Bmw 3 Series (17.5%) across comparable years. The biggest divergence was visibility, where the 3 Series recorded failures more often.
15.0%
A6 fail rate
17.5%
3 Series fail rate
2.5pp
Difference
Side by side
| Metric | Audi A6 | Bmw 3 Series |
|---|---|---|
| MOT tests analysed | 715,323 | 2,969,321 |
| Pass rate | 85.0% | 82.5% |
| Fail rate | 15.0% | 17.5% |
Where they differ
| Category | A6 | 3 Series |
|---|---|---|
| Visibility | 0.0% | 3.0% |
| Brakes | 2.7% | 5.6% |
| Emissions & environmental | 2.3% | 0.0% |
| Lighting & signalling | 5.8% | 7.8% |
| Suspension | 4.8% | 5.8% |
| Tyres | 6.2% | 6.3% |
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.