Audi A3 vs Audi A7 s line tdi quattro auto: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Audi A3
78%
MOT pass rate · 586,036 vehicles
Audi A7 s line tdi quattro auto
89%
MOT pass rate · 217 vehicles
More reliable
Verdict: On MOT pass rate, the Audi A7 s line tdi quattro auto is the more reliable of the two — 89% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Audi A3 | Audi A7 s line tdi quattro auto |
|---|---|---|
| MOT pass rate | 78% | 89% ✓ |
| MOT failure rate | 22% | 11% ✓ |
| Faults & advisories per test | 1.8 | 0.0 ✓ |
| Dangerous-fault share | 3% | — ✓ |
| Average mileage | 112,882 mi | 118,604 mi |
| Sample size (vehicles) | 586,036 | 217 |
Most common faults
Audi A3
- 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))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
Audi A7 s line tdi quattro auto
No fault breakdown available.
Reliability FAQ
On MOT pass rate, the Audi A7 s line tdi quattro auto is the more reliable of the two — 89% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Full Audi A3 report Full Audi A7 s line tdi quattro auto 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.