2011 Audi A3 — MOT failures & pass rate
Across 140,342 MOT tests, the 2011 Audi A3 recorded a 77.7% pass rate. Small family cars of a similar age fail at 22.9%, so the 2011 A3 sits squarely on the average. Failures cluster in suspension, lighting & signalling and tyres.
What the MOT record shows
No single area dominates — suspension (11.3%) and lighting & signalling (9.4%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are coil spring, linkage ball joint dust cover and headlamp aim — coil spring alone was recorded 6,682 times.
A 150k+ example is materially riskier than a 0-30k one: 24.5% versus 10.8%.
Split by fuel, diesel examples fail 2.1pp more often than petrol ones (22.8% vs 20.7%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: suspension was flagged on 28.8% of tests without failing them.
The trend is worsening — 20.6% of tests failed in 2021 against 23.8% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 11.3% | 15,889 |
| 2 | Lighting & signalling | 9.4% | 13,181 |
| 3 | Tyres | 6.7% | 9,443 |
| 4 | Brakes | 6.2% | 8,650 |
| 5 | Visibility | 3.1% | 4,364 |
| 6 | Emissions & environmental | 2.4% | 3,403 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Coil spring | 6,682 |
| 2 | Linkage ball joint dust cover | 5,934 |
| 3 | Headlamp aim | 5,917 |
| 4 | Tread depth | 5,911 |
| 5 | Individual direction indicators | 4,006 |
| 6 | Service brake performance | 3,282 |
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 | 28.8% | 40,356 |
| 2 | Tyres | 28.7% | 40,260 |
| 3 | Brakes | 21.7% | 30,396 |
| 4 | Lighting & signalling | 11.4% | 15,956 |
| 5 | Other defects | 9.3% | 13,128 |
| 6 | Visibility | 6.4% | 9,007 |
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 | 1,108 | 10.8% |
| 30-60k | 10,818 | 16.3% |
| 60-90k | 32,240 | 20.7% |
| 90-120k | 42,182 | 23.2% |
| 120-150k | 31,757 | 23.6% |
| 150k+ | 22,206 | 24.5% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 103,004 | 22.8% |
| Petrol | 37,338 | 20.7% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 29,119 | 20.6% |
| 2022 | 29,006 | 21.3% |
| 2023 | 28,550 | 22.7% |
| 2024 | 27,520 | 23.2% |
| 2025 | 26,147 | 23.8% |
What to check before buying a 2011 A3
On a 2011 A3, suspension is what the MOT record says goes wrong most — it appeared in 11.3% of tests. Check these areas before you commit.
- Suspension (11.3% 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.
- Lighting & signalling (9.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (6.7% 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.
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 2011 Audi A3s pass their MOT?
77.7% of the 140,342 2011 Audi A3 MOT tests in this dataset passed — a 22.3% fail rate.
What is the most common MOT failure on a 2011 Audi A3?
Suspension, recorded in 11.3% of tests, followed by lighting & signalling (9.4%).
Does the 2011 A3 get worse with mileage?
Its MOT fail rate rises from 10.8% in the 0-30k band to 24.5% in the 150k+ band.
Methodology & source. Based on 140,342 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.