Mazda 6 vs Mazda Sl3: 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 Sl3
67%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mazda 6 (75%) and Mazda Sl3 (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 6 | Mazda Sl3 |
|---|---|---|
| MOT pass rate | 75% ✓ | 67% |
| MOT failure rate | 25% ✓ | 33% |
| Faults & advisories per test | 1.9 ✓ | 2.8 |
| Dangerous-fault share | 2% ✓ | 4% |
| Average mileage | 113,866 mi | 154,845 mi |
| Sample size (vehicles) | 159,403 | 1 |
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 Sl3
- Oil leak, but not excessive (8.4.1 (a) (i))
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Nail in offside rear tyre
- Nearside Rear Registration plate lamp not working (1.1.C.1d)
- Oil leak
Reliability FAQ
On MOT pass rate the Mazda 6 (75%) and Mazda Sl3 (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 6 report Full Mazda Sl3 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.