Mazda 3 vs Mazda Gr: 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 Gr
50%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mazda 3 (78%) and Mazda Gr (50%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 3 | Mazda Gr |
|---|---|---|
| MOT pass rate | 78% ✓ | 50% |
| MOT failure rate | 22% ✓ | 50% |
| Faults & advisories per test | 2.0 ✓ | 4.8 |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 90,915 mi | 63,086 mi |
| Sample size (vehicles) | 164,058 | 1 |
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 Gr
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Brake pipe slightly corroded (3.6.B.2c)
- Nearside Front Brake pipe slightly corroded (3.6.B.2c)
- Offside Front Brake pipe excessively corroded (3.6.B.2c)
- Oil leak
- Front brake disc slightly pitted (3.5.1h)
Reliability FAQ
On MOT pass rate the Mazda 3 (78%) and Mazda Gr (50%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 3 report Full Mazda Gr 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.