1997 Audi A8 — MOT failures & pass rate
The 1997 Audi A8 passed 74.5% of its 251 recorded MOT tests. Against executive cars of a similar age (22.4% fail rate), the 1997 A8 comes out 3.1pp worse. Failures cluster in brakes, lighting & signalling and suspension.
What the MOT record shows
No single area dominates — brakes (10.8%) and lighting & signalling (10.4%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are ball joint, track rod end and washers — ball joint alone was recorded 16 times.
Mileage matters less than usual here: the 1997 A8 fails 27.9% of the time in the 60-90k band and 25.0% at 150k+, a spread of only 2.9 points.
Brakes is the most common advisory, noted on 35.1% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 10.8% | 27 |
| 2 | Lighting & signalling | 10.4% | 26 |
| 3 | Suspension | 9.2% | 23 |
| 4 | Steering | 8.0% | 20 |
| 5 | Visibility | 7.6% | 19 |
| 6 | Tyres | 5.2% | 13 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Ball joint | 16 |
| 2 | Track rod end | 16 |
| 3 | Washers | 14 |
| 4 | Joints | 13 |
| 5 | Rbt (sp) | 11 |
| 6 | Wipers | 9 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 35.1% | 88 |
| 2 | Suspension | 33.5% | 84 |
| 3 | Emissions & environmental | 29.9% | 75 |
| 4 | Tyres | 27.1% | 68 |
| 5 | Body, structure & corrosion | 12.8% | 32 |
| 6 | Steering | 8.8% | 22 |
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 | 43 | 27.9% |
| 90-120k | 49 | 26.5% |
| 120-150k | 69 | 24.6% |
| 150k+ | 88 | 25.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 79 | 24.1% |
| 2022 | 59 | 27.1% |
| 2023 | 48 | 29.2% |
| 2024 | 39 | 23.1% |
What to check before buying a 1997 A8
The failure pattern for this year is specific enough to inspect against: brakes accounted for 10.8% of tests. Start there.
- Brakes (10.8% 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 (10.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (9.2% 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 1997 Audi A8s pass their MOT?
74.5% of the 251 1997 Audi A8 MOT tests in this dataset passed — a 25.5% fail rate.
What is the most common MOT failure on a 1997 Audi A8?
Brakes, recorded in 10.8% of tests, followed by lighting & signalling (10.4%).
Does the 1997 A8 get worse with mileage?
Its MOT fail rate rises from 27.9% in the 60-90k band to 25.0% in the 150k+ band.
Methodology & source. Based on 251 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.