1989 Audi Quattro — MOT failures & pass rate
262 MOT tests on the 1989 Audi Quattro are in this dataset, and 85.9% of them passed. Against all cars of a similar age (21.3% fail rate), the 1989 Quattro comes out 7.2pp better. Failures cluster in lighting & signalling, brakes and emissions & environmental.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 9.9% of tests against 5.0% for the next-worst category.
At component level the recurring items are headlamp aim, non catalyst emissions and position lamp — headlamp aim alone was recorded 14 times.
Mileage matters less than usual here: the 1989 Quattro fails 8.6% of the time in the 60-90k band and 7.5% at 150k+, a spread of only 1.1 points.
Suspension is the most common advisory, noted on 18.7% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 14.8% in 2021 to 10.6% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 9.9% | 26 |
| 2 | Brakes | 5.0% | 13 |
| 3 | Emissions & environmental | 4.2% | 11 |
| 4 | Body, structure & corrosion | 3.4% | 9 |
| 5 | Suspension | 3.0% | 8 |
| 6 | Visibility | 3.0% | 8 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 14 |
| 2 | Non catalyst emissions | 8 |
| 3 | Position lamp | 7 |
| 4 | Service brake performance | 6 |
| 5 | Headlamp | 5 |
| 6 | Washers | 5 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 18.7% | 49 |
| 2 | Brakes | 17.2% | 45 |
| 3 | Tyres | 10.3% | 27 |
| 4 | Lighting & signalling | 6.5% | 17 |
| 5 | Body, structure & corrosion | 5.0% | 13 |
| 6 | Emissions & environmental | 4.6% | 12 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 60-90k | 58 | 8.6% |
| 90-120k | 41 | 26.8% |
| 120-150k | 68 | 14.7% |
| 150k+ | 53 | 7.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 54 | 14.8% |
| 2022 | 61 | 14.8% |
| 2023 | 48 | 16.7% |
| 2024 | 52 | 13.5% |
| 2025 | 47 | 10.6% |
What to check before buying a 1989 Quattro
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 9.9% of tests. Start there.
- Lighting & signalling (9.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (5.0% 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.
- Emissions & environmental (4.2% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
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 1989 Audi Quattros pass their MOT?
85.9% of the 262 1989 Audi Quattro MOT tests in this dataset passed — a 14.1% fail rate.
What is the most common MOT failure on a 1989 Audi Quattro?
Lighting & signalling, recorded in 9.9% of tests, followed by brakes (5.0%).
Does the 1989 Quattro get worse with mileage?
Its MOT fail rate rises from 8.6% in the 60-90k band to 7.5% in the 150k+ band.
Methodology & source. Based on 262 MOT tests. 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.