Audi A3 MOT pass rate & common failures
Across 33 model years and 2,507,563 tests, the Audi A3 passes its MOT 82.7% of the time. That is 1.5 percentage points better than small family cars of a similar age, which fail at 18.8%. Its most common failure areas are suspension, lighting & signalling and tyres.
Best and worst A3 years
Ranked across A3 years with at least 1,000 tests. Older cars fail more simply because they are older — compare years close together in age before drawing conclusions.
What the MOT record shows
Not every year is equal — 94.1% of 2023 examples pass against 70.7% of 2004 ones.
No single area dominates — suspension (7.2%) and lighting & signalling (6.8%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, tread depth and coil spring — headlamp aim alone was recorded 94,234 times.
Condition tracks the odometer closely. Failures run at 7.0% in the 0-30k band and 26.4% in the 150k+ band, a 19.4-point spread — more than double.
Split by fuel, diesel examples fail 9.0pp more often than hybrid ones (19.8% vs 10.8%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: tyres was flagged on 26.8% of tests without failing them.
How it compares
By model year
Every A3 model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 1996 | 55 | 69.1% | 30.9% | Lighting & signalling |
| 1997 | 822 | 72.8% | 27.3% | Lighting & signalling |
| 1998 | 2,042 | 71.8% | 28.2% | Brakes |
| 1999 | 2,678 | 74.5% | 25.5% | Lighting & signalling |
| 2000 | 4,751 | 72.5% | 27.6% | Lighting & signalling |
| 2001 | 7,127 | 73.3% | 26.7% | Lighting & signalling |
| 2002 | 10,391 | 71.8% | 28.2% | Lighting & signalling |
| 2003 | 14,443 | 71.0% | 29.0% | Lighting & signalling |
| 2004 | 31,713 | 70.7% | 29.3% | Lighting & signalling |
| 2005 | 66,781 | 72.0% | 28.0% | Suspension |
| 2006 | 94,332 | 72.4% | 27.6% | Suspension |
| 2007 | 109,642 | 74.0% | 26.0% | Suspension |
| 2008 | 134,693 | 74.6% | 25.4% | Suspension |
| 2009 | 152,691 | 75.9% | 24.1% | Suspension |
| 2010 | 167,101 | 76.1% | 23.9% | Suspension |
| 2011 | 140,342 | 77.7% | 22.3% | Suspension |
| 2012 | 162,730 | 79.4% | 20.6% | Lighting & signalling |
| 2013 | 165,904 | 82.9% | 17.1% | Suspension |
| 2014 | 228,503 | 85.7% | 14.3% | Tyres |
| 2015 | 238,533 | 87.8% | 12.2% | Tyres |
| 2016 | 218,765 | 89.5% | 10.5% | Tyres |
| 2017 | 189,219 | 90.3% | 9.7% | Tyres |
| 2018 | 150,904 | 90.8% | 9.2% | Tyres |
| 2019 | 94,473 | 90.8% | 9.2% | Tyres |
| 2020 | 52,333 | 91.3% | 8.7% | Tyres |
| 2021 | 45,506 | 91.2% | 8.8% | Tyres |
| 2022 | 20,010 | 91.3% | 8.7% | Tyres |
| 2023 | 1,006 | 94.1% | 5.9% | Tyres |
| 2024 | 54 | 90.7% | 9.3% | Tyres |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 7.2% | 179,756 |
| 2 | Lighting & signalling | 6.8% | 170,858 |
| 3 | Tyres | 6.3% | 158,670 |
| 4 | Brakes | 4.5% | 114,195 |
| 5 | Visibility | 2.6% | 64,557 |
| 6 | Emissions & environmental | 2.6% | 64,154 |
| 7 | Body, structure & corrosion | 2.5% | 61,403 |
| 8 | Seat belts & restraints | 0.9% | 22,077 |
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 | 94,234 |
| 2 | Tread depth | 89,552 |
| 3 | Coil spring | 81,564 |
| 4 | Linkage ball joint dust cover | 48,149 |
| 5 | Brake pads | 47,164 |
| 6 | Joints | 43,147 |
| 7 | Headlamp | 38,491 |
| 8 | Malfunction indicator lamp | 38,424 |
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 | 26.8% | 672,464 |
| 2 | Brakes | 20.2% | 505,381 |
| 3 | Suspension | 18.2% | 457,069 |
| 4 | Other defects | 8.4% | 211,182 |
| 5 | Lighting & signalling | 6.3% | 157,020 |
| 6 | Visibility | 4.8% | 121,325 |
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 | 240,564 | 7.0% |
| 30-60k | 582,140 | 10.6% |
| 60-90k | 581,327 | 16.5% |
| 90-120k | 492,513 | 21.5% |
| 120-150k | 341,317 | 24.4% |
| 150k+ | 268,930 | 26.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 1,312,348 | 19.8% |
| Petrol | 1,158,420 | 14.7% |
| Hybrid | 36,775 | 10.8% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 500,256 | 17.5% |
| 2022 | 505,030 | 17.3% |
| 2023 | 503,999 | 17.5% |
| 2024 | 501,404 | 17.3% |
| 2025 | 496,874 | 17.0% |
What to check before buying a Audi A3
- Suspension (7.2% 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.
- Lighting & signalling (6.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (6.3% 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
What is the MOT pass rate for the Audi A3?
82.7% of the 2,507,563 Audi A3 MOT tests in this dataset passed, a 17.3% fail rate, across model years 1993–2025.
What does the Audi A3 most often fail its MOT on?
Suspension, recorded in 7.2% of tests, then lighting & signalling (6.8%).
Which A3 years are best and worst for MOT results?
2023 has the best pass rate at 94.1% and 2004 the weakest at 70.7%, from 1,006 and 31,713 tests respectively.
How much does mileage affect A3 MOT results?
Fail rates run at 7.0% for cars in the 0-30k band and 26.4% for 150k+, a 19.4-point difference.
Is the hybrid or diesel A3 more reliable at MOT time?
On MOT-testable defects the hybrid fails 10.8% of the time against 19.8% for the diesel. This covers testable items only, not engine or gearbox reliability.
Methodology & source. Based on 2,507,563 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.