Mazda 3 vs Mazda Cx-30 gt sport tech mhev 4x4: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda 3
78%
MOT pass rate · 164,058 vehicles
Mazda Cx-30 gt sport tech mhev 4x4
91%
MOT pass rate · 294 vehicles
More reliable
Verdict: On MOT pass rate, the Mazda Cx-30 gt sport tech mhev 4x4 is the more reliable of the two — 91% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Mazda 3 | Mazda Cx-30 gt sport tech mhev 4x4 |
|---|---|---|
| MOT pass rate | 78% | 91% ✓ |
| MOT failure rate | 22% | 9% ✓ |
| Faults & advisories per test | 2.0 | 0.9 ✓ |
| Dangerous-fault share | 3% | 3% |
| Average mileage | 90,915 mi | 32,857 mi |
| Sample size (vehicles) | 164,058 | 294 |
Most common faults
Mazda 3
- 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 Front Tyre worn close to the legal limit (4.1.E.1)
- Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
Mazda Cx-30 gt sport tech mhev 4x4
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- 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))
- Offside 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 tech mhev 4x4 is the more reliable of the two — 91% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Full Mazda 3 report Full Mazda Cx-30 gt sport tech mhev 4x4 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.