Audi TT vs Mercedes-Benz Clk
On MOT-testable defects the Audi TT comes out ahead: 17.4% of its tests record a failure against 25.3% for the Mercedes-Benz Clk, a 7.9-point gap. The biggest single difference is suspension, where the Clk records failures noticeably more often.
17.4%
TT fail rate
25.3%
Clk fail rate
7.92pp
Difference
Side by side
| Metric | Audi TT | Mercedes-Benz Clk |
|---|---|---|
| MOT tests analysed | 676,127 | 204,964 |
| Pass rate | 82.6% | 74.7% |
| Fail rate | 17.4% | 25.3% |
Where they differ
| Category | TT | Clk |
|---|---|---|
| Suspension | 6.4% | 14.7% |
| Visibility | 0.0% | 4.2% |
| Lighting & signalling | 7.3% | 11.2% |
| Brakes | 4.8% | 8.2% |
| Emissions & environmental | 3.3% | 0.0% |
| Tyres | 5.1% | 6.1% |
Methodology & source. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.