Audi 80 MOT pass rate & common failures
5,859 MOT tests on the Audi 80 (1981–2020) give it a 74.6% pass rate. All cars of a similar age fail 23.4% of the time, so this is 2.0pp worse than the group it competes with. Its most common failure areas are lighting & signalling, brakes and suspension.
What the MOT record shows
Lighting & signalling dominates the failure mix at 13.6% of all tests — 3.2 points clear of brakes, so it is the first thing to check.
At component level the recurring items are catalyst emissions, headlamp aim and pins and bushes — catalyst emissions alone was recorded 392 times.
Mileage is the strongest signal on the record: 18.1% of 0-30k cars fail, rising to 28.6% once past 150k.
Split by fuel, diesel examples fail 3.1pp more often than petrol ones (27.9% vs 24.8%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: suspension was flagged on 37.6% of tests without failing them.
The trend is improving — the fail rate fell from 28.3% in 2021 to 25.1% in 2025, as the worst-kept examples leave the fleet.
How it compares
By model year
Every 80 model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 1983 | 50 | 78.0% | 22.0% | Lighting & signalling |
| 1984 | 149 | 83.2% | 16.8% | Lighting & signalling |
| 1985 | 133 | 77.4% | 22.6% | Body, structure & corrosion |
| 1986 | 105 | 82.9% | 17.1% | Body, structure & corrosion |
| 1987 | 46 | 71.7% | 28.3% | Suspension |
| 1988 | 125 | 68.8% | 31.2% | Lighting & signalling |
| 1989 | 101 | 82.2% | 17.8% | Body, structure & corrosion |
| 1990 | 171 | 79.0% | 21.1% | Lighting & signalling |
| 1991 | 239 | 76.1% | 23.8% | Lighting & signalling |
| 1992 | 499 | 73.8% | 26.3% | Brakes |
| 1993 | 849 | 71.9% | 28.1% | Lighting & signalling |
| 1994 | 1,760 | 73.1% | 26.9% | Lighting & signalling |
| 1995 | 763 | 73.9% | 26.1% | Lighting & signalling |
| 1996 | 38 | 76.3% | 23.7% | Lighting & signalling |
| 1997 | 212 | 75.5% | 24.5% | Suspension |
| 1998 | 178 | 77.0% | 23.0% | Lighting & signalling |
| 1999 | 234 | 75.2% | 24.8% | Lighting & signalling |
| 2000 | 120 | 81.7% | 18.3% | Lighting & signalling |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.6% | 797 |
| 2 | Brakes | 10.4% | 609 |
| 3 | Suspension | 10.1% | 589 |
| 4 | Body, structure & corrosion | 8.9% | 522 |
| 5 | Emissions & environmental | 7.1% | 414 |
| 6 | Visibility | 5.6% | 326 |
| 7 | Steering | 3.6% | 214 |
| 8 | Tyres | 3.2% | 186 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 392 |
| 2 | Headlamp aim | 323 |
| 3 | Pins and bushes | 286 |
| 4 | Joints | 264 |
| 5 | Service brake performance | 243 |
| 6 | Flexible brake hoses | 219 |
| 7 | Rbt (sp) | 210 |
| 8 | Washers | 198 |
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 | 37.6% | 2,203 |
| 2 | Brakes | 30.1% | 1,765 |
| 3 | Tyres | 19.0% | 1,114 |
| 4 | Emissions & environmental | 16.9% | 990 |
| 5 | Body, structure & corrosion | 15.3% | 898 |
| 6 | Other defects | 13.9% | 817 |
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 | 94 | 18.1% |
| 30-60k | 385 | 20.0% |
| 60-90k | 901 | 21.9% |
| 90-120k | 1,267 | 24.9% |
| 120-150k | 1,226 | 25.9% |
| 150k+ | 1,982 | 28.6% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 4,552 | 24.8% |
| Diesel | 1,302 | 27.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,493 | 28.3% |
| 2022 | 1,294 | 25.1% |
| 2023 | 1,167 | 24.7% |
| 2024 | 978 | 22.7% |
| 2025 | 927 | 25.1% |
What to check before buying a Audi 80
- Lighting & signalling (13.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (10.4% 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.
- Suspension (10.1% 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
What is the MOT pass rate for the Audi 80?
74.6% of the 5,859 Audi 80 MOT tests in this dataset passed, a 25.4% fail rate, across model years 1981–2020.
What does the Audi 80 most often fail its MOT on?
Lighting & signalling, recorded in 13.6% of tests, then brakes (10.4%).
How much does mileage affect 80 MOT results?
Fail rates run at 18.1% for cars in the 0-30k band and 28.6% for 150k+, a 10.5-point difference.
Is the petrol or diesel 80 more reliable at MOT time?
On MOT-testable defects the petrol fails 24.8% of the time against 27.9% for the diesel. This covers testable items only, not engine or gearbox reliability.
Methodology & source. Based on 5,859 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.