Audi A3 vs Audi A8 l vsprung 50tdi mhev quat a: 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 A8 l vsprung 50tdi mhev quat a
93%
MOT pass rate · 24 vehicles
Verdict: On MOT pass rate the Audi A3 (78%) and Audi A8 l vsprung 50tdi mhev quat a (93%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Audi A3 | Audi A8 l vsprung 50tdi mhev quat a |
|---|---|---|
| MOT pass rate | 78% | 93% ✓ |
| MOT failure rate | 22% | 7% ✓ |
| Faults & advisories per test | 1.8 | 0.4 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 112,882 mi | 35,841 mi |
| Sample size (vehicles) | 586,036 | 24 |
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 A8 l vsprung 50tdi mhev quat a
- Front Brake disc worn, but not excessively Both (1.1.14 (a) (i))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake disc worn, but not excessively Both (1.1.14 (a) (i))
- Front Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
- undercovers fitted to vehicle
- Offside Front Tyre worn close to legal limit/worn on edge 2.9mm (5.2.3 (e))
Reliability FAQ
On MOT pass rate the Audi A3 (78%) and Audi A8 l vsprung 50tdi mhev quat a (93%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Audi A3 report Full Audi A8 l vsprung 50tdi mhev quat 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.