Mazda 6 vs Mazda Cx-30 gt sport mhev 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 Cx-30 gt sport mhev auto
93%
MOT pass rate · 1,748 vehicles
More reliable
Verdict: On MOT pass rate, the Mazda Cx-30 gt sport mhev auto is the more reliable of the two — 93% pass first time versus 75%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Mazda 6 | Mazda Cx-30 gt sport mhev auto |
|---|---|---|
| MOT pass rate | 75% | 93% ✓ |
| MOT failure rate | 25% | 7% ✓ |
| Faults & advisories per test | 1.9 | 0.8 ✓ |
| Dangerous-fault share | 2% ✓ | 3% |
| Average mileage | 113,866 mi | 29,784 mi |
| Sample size (vehicles) | 159,403 | 1,748 |
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 Cx-30 gt sport mhev auto
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Offside Rear Shock absorbers has light misting of oil (5.3.2 (b))
- 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 Shock absorbers has light misting of oil (5.3.2 (b))
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
Reliability FAQ
On MOT pass rate, the Mazda Cx-30 gt sport mhev auto is the more reliable of the two — 93% pass first time versus 75%. It's one signal among several; check the full breakdown below.
Full Mazda 6 report Full Mazda Cx-30 gt sport mhev 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.