Mazda 323 g vs Mazda 6: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda 323 g
57%
MOT pass rate · 13 vehicles
Mazda 6
75%
MOT pass rate · 159,403 vehicles
Verdict: On MOT pass rate the Mazda 323 g (57%) and Mazda 6 (75%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 323 g | Mazda 6 |
|---|---|---|
| MOT pass rate | 57% | 75% ✓ |
| MOT failure rate | 43% | 25% ✓ |
| Faults & advisories per test | 3.2 | 1.9 ✓ |
| Dangerous-fault share | 0% ✓ | 2% |
| Average mileage | 130,569 mi | 113,866 mi |
| Sample size (vehicles) | 13 | 159,403 |
Most common faults
Mazda 323 g
- Exhaust has part of the system slightly deteriorated (7.1.1a)
- Oil leak
- Rear coil spring corroded (2.4.C.1b)
- Sub-frame corroded but not seriously weakened (2.4.G.1)
- Exhaust has a minor leak of exhaust gases (7.1.2)
- Fuel pipe/s corroded
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
Reliability FAQ
On MOT pass rate the Mazda 323 g (57%) and Mazda 6 (75%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 323 g report Full Mazda 6 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.