Mazda 3 sport nav auto vs Mazda 6: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda 3 sport nav auto
90%
MOT pass rate · 39 vehicles
Mazda 6
75%
MOT pass rate · 159,403 vehicles
Verdict: On MOT pass rate the Mazda 3 sport nav auto (90%) 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 3 sport nav auto | Mazda 6 |
|---|---|---|
| MOT pass rate | 90% ✓ | 75% |
| MOT failure rate | 10% ✓ | 25% |
| Faults & advisories per test | 0.0 ✓ | 1.9 |
| Dangerous-fault share | — ✓ | 2% |
| Average mileage | 62,479 mi | 113,866 mi |
| Sample size (vehicles) | 39 | 159,403 |
Most common faults
Mazda 3 sport nav auto
No fault breakdown available.
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 3 sport nav auto (90%) and Mazda 6 (75%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 3 sport nav auto 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.