Audi A1 vs Audi S3 tfsi quattro: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Audi A1
84%
MOT pass rate · 235,482 vehicles
Audi S3 tfsi quattro
91%
MOT pass rate · 191 vehicles
Verdict: On MOT pass rate the Audi A1 (84%) and Audi S3 tfsi quattro (91%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Audi A1 | Audi S3 tfsi quattro |
|---|---|---|
| MOT pass rate | 84% | 91% ✓ |
| MOT failure rate | 16% | 9% ✓ |
| Faults & advisories per test | 1.5 | 0.1 ✓ |
| Dangerous-fault share | 5% ✓ | 8% |
| Average mileage | 67,791 mi | 76,324 mi |
| Sample size (vehicles) | 235,482 | 191 |
Most common faults
Audi A1
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Audi S3 tfsi quattro
- Front Brake disc worn, but not excessively (1.1.14 (a) (i))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Offside Front Lower Windscreen damaged but not adversely affecting driver's view Chip in the windscreen. (3.2 (a) (i))
- Nearside Rear Child Seat fitted not allowing full inspection of adult belt
- Brake disc worn, pitted or scored, but not seriously weakened Both Rear (1.1.14 (a) (ii))
Reliability FAQ
On MOT pass rate the Audi A1 (84%) and Audi S3 tfsi quattro (91%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Audi A1 report Full Audi S3 tfsi quattro report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.