Audi A6 vs Audi C gt5 s auto: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Audi A6
78%
MOT pass rate · 246,602 vehicles
Audi C gt5 s auto
60%
MOT pass rate · 1,969 vehicles
Verdict: On MOT pass rate the Audi A6 (78%) and Audi C gt5 s auto (60%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Audi A6 | Audi C gt5 s auto |
|---|---|---|
| MOT pass rate | 78% ✓ | 60% |
| MOT failure rate | 22% ✓ | 40% |
| Faults & advisories per test | 1.7 ✓ | 4.0 |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 136,441 mi | 51,826 mi |
| Sample size (vehicles) | 246,602 | 1,969 |
Most common faults
Audi A6
- 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 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 the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
Audi C gt5 s auto
- Front Macpherson strut has slight movement at the upper attachment (2.5.A.1c)
- Centre Steering rack gaiter split (2.2.D.2d)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Nearside Front Macpherson strut has slight movement at the upper attachment (2.5.A.1c)
- Nearside Headlamp aim too low (1.8)
- Nearside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
Reliability FAQ
On MOT pass rate the Audi A6 (78%) and Audi C gt5 s auto (60%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Audi A6 report Full Audi C gt5 s 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.