Mazda 6 vs Mazda Cx-3 sport nav: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda 6
75%
MOT pass rate · 159,403 vehicles
Mazda Cx-3 sport nav
96%
MOT pass rate · 147 vehicles
More reliable
Verdict: On MOT pass rate, the Mazda Cx-3 sport nav is the more reliable of the two — 96% pass first time versus 75%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Mazda 6 | Mazda Cx-3 sport nav |
|---|---|---|
| MOT pass rate | 75% | 96% ✓ |
| MOT failure rate | 25% | 4% ✓ |
| Faults & advisories per test | 1.9 | 0.0 ✓ |
| Dangerous-fault share | 2% ✓ | 10% |
| Average mileage | 113,866 mi | 60,466 mi |
| Sample size (vehicles) | 159,403 | 147 |
Most common faults
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
Mazda Cx-3 sport nav
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Rear Tyre slightly damaged/cracking or perishing both (5.2.3 (d) (ii))
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))
- Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))
- Offside Rear Child Seat fitted not allowing full inspection of adult belt
Reliability FAQ
On MOT pass rate, the Mazda Cx-3 sport nav is the more reliable of the two — 96% pass first time versus 75%. It's one signal among several; check the full breakdown below.
Full Mazda 6 report Full Mazda Cx-3 sport nav 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.