Mazda 323 glx fastback vs Mazda 6: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda 323 glx fastback
60%
MOT pass rate · 1 vehicles
Mazda 6
75%
MOT pass rate · 159,403 vehicles
Verdict: On MOT pass rate the Mazda 323 glx fastback (60%) 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 glx fastback | Mazda 6 |
|---|---|---|
| MOT pass rate | 60% | 75% ✓ |
| MOT failure rate | 40% | 25% ✓ |
| Faults & advisories per test | 2.0 | 1.9 ✓ |
| Dangerous-fault share | 0% ✓ | 2% |
| Average mileage | 48,218 mi | 113,866 mi |
| Sample size (vehicles) | 1 | 159,403 |
Most common faults
Mazda 323 glx fastback
- Nearside Brake pipe excessively corroded (3.6.B.2c)
- Nearside Rear Brake pipe excessively corroded (3.6.B.2c)
- Offside Brake pipe excessively corroded (3.6.B.2c)
- Offside Front constant velocity joint gaiter split (2.5.C.1a)
- Offside Rear Brake pipe excessively corroded (3.6.B.2c)
- excessive surface rust to underside suspension components but not dangerous
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 glx fastback (60%) and Mazda 6 (75%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 323 glx fastback 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.