2019 Audi S4 Black A — MOT failures & pass rate
Across 408 MOT tests analysed for the 2019 Audi S4 Black A, the most common recorded failure areas were tyres, lighting & signalling and suspension. Its pass rate of 93.4% was above the average for cars of a similar age (89.8%). Higher-mileage examples failed more often — 13.7% in the 60-90k group versus 0.8% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 3.4% | 14 |
| 2 | Lighting & signalling | 1.5% | 6 |
| 3 | Suspension | 1.5% | 6 |
| 4 | Brakes | 1.2% | 5 |
| 5 | Visibility | 0.5% | 2 |
| 6 | Other defects | 0.3% | 1 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Brake pads | 6 |
| 2 | Headlamp aim | 6 |
| 3 | Mounting | 4 |
| 4 | Coil spring | 2 |
| 5 | Tyre pressure monitoring system | 2 |
| 6 | Flexible brake hoses | 1 |
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 | 17.2% | 70 |
| 2 | Brakes | 12.0% | 49 |
| 3 | Suspension | 6.1% | 25 |
| 4 | Other defects | 4.9% | 20 |
| 5 | Visibility | 2.0% | 8 |
| 6 | Road wheels | 0.3% | 1 |
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 | 119 | 0.8% |
| 30-60k | 226 | 7.5% |
| 60-90k | 51 | 13.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 99 | 3.0% |
| 2023 | 106 | 5.7% |
| 2024 | 102 | 9.8% |
| 2025 | 101 | 7.9% |
What to check before buying a 2019 S4 Black A
Before buying a 2019 Audi S4 Black A, focus on the areas it most often fails on. Tyres accounted for 3.4% of tests for this year.
- Tyres (3.4% 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.
- 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.
- Suspension (1.5% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
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 2019 Audi S4 Black As pass their MOT?
93.4% of the 408 2019 Audi S4 Black A MOT tests in this dataset passed — a 6.6% fail rate.
What is the most common MOT failure on a 2019 Audi S4 Black A?
Tyres, recorded in 3.4% of tests, followed by lighting & signalling (1.5%).
Does the 2019 S4 Black A get worse with mileage?
Its MOT fail rate rises from 0.8% in the 0-30k band to 13.7% in the 60-90k band.
Methodology & source. Based on 408 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.