Audi A1 vs Audi A4 avant sline 170tdiqtro: 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 A4 avant sline 170tdiqtro
80%
MOT pass rate · 28 vehicles
Verdict: On MOT pass rate the Audi A1 (84%) and Audi A4 avant sline 170tdiqtro (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Audi A1 | Audi A4 avant sline 170tdiqtro |
|---|---|---|
| MOT pass rate | 84% ✓ | 80% |
| MOT failure rate | 16% ✓ | 20% |
| Faults & advisories per test | 1.5 | 0.0 ✓ |
| Dangerous-fault share | 5% | — ✓ |
| Average mileage | 67,791 mi | 159,356 mi |
| Sample size (vehicles) | 235,482 | 28 |
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 A4 avant sline 170tdiqtro
No fault breakdown available.
Reliability FAQ
On MOT pass rate the Audi A1 (84%) and Audi A4 avant sline 170tdiqtro (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Audi A1 report Full Audi A4 avant sline 170tdiqtro 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.