2021 Audi Q7 Sln Blk Ed 50Tdi Mhev Qto A — MOT failures & pass rate
Across 1,858 MOT tests analysed for the 2021 Audi Q7 Sln Blk Ed 50Tdi Mhev Qto A, the most common recorded failure areas were tyres, brakes and lighting & signalling. Its pass rate of 90.5% was in line with the average for cars of a similar age (91.2%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 6.3% | 118 |
| 2 | Brakes | 1.7% | 31 |
| 3 | Lighting & signalling | 1.5% | 27 |
| 4 | Visibility | 1.2% | 22 |
| 5 | Emissions & environmental | 0.8% | 14 |
| 6 | Other defects | 0.6% | 11 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 47 |
| 2 | Headlamp aim | 27 |
| 3 | Brake pads | 19 |
| 4 | Registration plates | 16 |
| 5 | Wipers | 13 |
| 6 | Malfunction indicator lamp | 13 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 18.1% | 337 |
| 2 | Brakes | 16.6% | 309 |
| 3 | Other defects | 10.5% | 196 |
| 4 | Visibility | 3.7% | 69 |
| 5 | Lighting & signalling | 1.0% | 18 |
| 6 | Suspension | 0.9% | 16 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 575 | 9.6% |
| 30-60k | 1,098 | 9.2% |
| 60-90k | 168 | 11.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 32 | 12.5% |
| 2024 | 919 | 9.8% |
| 2025 | 902 | 9.1% |
What to check before buying a 2021 Q7 Sln Blk Ed 50Tdi Mhev Qto A
Before buying a 2021 Audi Q7 Sln Blk Ed 50Tdi Mhev Qto A, focus on the areas it most often fails on. Tyres accounted for 6.3% of tests for this year.
- Tyres (6.3% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Brakes (1.7% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Lighting & signalling (1.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2021 Audi Q7 Sln Blk Ed 50Tdi Mhev Qto As pass their MOT?
90.5% of the 1,858 2021 Audi Q7 Sln Blk Ed 50Tdi Mhev Qto A MOT tests in this dataset passed — a 9.5% fail rate.
What is the most common MOT failure on a 2021 Audi Q7 Sln Blk Ed 50Tdi Mhev Qto A?
Tyres, recorded in 6.3% of tests, followed by brakes (1.7%).
Does the 2021 Q7 Sln Blk Ed 50Tdi Mhev Qto A get worse with mileage?
Its MOT fail rate rises from 9.6% in the 0-30k band to 11.9% in the 60-90k band.
Methodology & source. Based on 1,858 MOT tests. 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.