Audi A1 vs Audi S3 tfsi quattro s-a: 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 s-a
92%
MOT pass rate · 4,624 vehicles
More reliable
Verdict: On MOT pass rate, the Audi S3 tfsi quattro s-a is the more reliable of the two — 92% pass first time versus 84%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Audi A1 | Audi S3 tfsi quattro s-a |
|---|---|---|
| MOT pass rate | 84% | 92% ✓ |
| MOT failure rate | 16% | 8% ✓ |
| Faults & advisories per test | 1.5 | 0.7 ✓ |
| Dangerous-fault share | 5% ✓ | 8% |
| Average mileage | 67,791 mi | 33,529 mi |
| Sample size (vehicles) | 235,482 | 4,624 |
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 s-a
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
Reliability FAQ
On MOT pass rate, the Audi S3 tfsi quattro s-a is the more reliable of the two — 92% pass first time versus 84%. It's one signal among several; check the full breakdown below.
Full Audi A1 report Full Audi S3 tfsi quattro s-a 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.