Mazda 6 vs Mazda Rx 8 auto: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda 6
75%
MOT pass rate · 159,403 vehicles
Mazda Rx 8 auto
73%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mazda 6 (75%) and Mazda Rx 8 auto (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 6 | Mazda Rx 8 auto |
|---|---|---|
| MOT pass rate | 75% ✓ | 73% |
| MOT failure rate | 25% ✓ | 27% |
| Faults & advisories per test | 1.9 | 1.0 ✓ |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 113,866 mi | 21,121 mi |
| Sample size (vehicles) | 159,403 | 1 |
Most common faults
Mazda 6
- 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)
- Rear Brake pad(s) wearing thin (3.5.1g)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Under-trays fitted obscuring some underside components
Mazda Rx 8 auto
- Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Nearside Side repeater missing (1.4.A.2b)
Reliability FAQ
On MOT pass rate the Mazda 6 (75%) and Mazda Rx 8 auto (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 6 report Full Mazda Rx 8 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.