Mazda 6 vs Mazda Sgl5: 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 Sgl5
72%
MOT pass rate · 5 vehicles
Verdict: On MOT pass rate the Mazda 6 (75%) and Mazda Sgl5 (72%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 6 | Mazda Sgl5 |
|---|---|---|
| MOT pass rate | 75% ✓ | 72% |
| MOT failure rate | 25% ✓ | 28% |
| Faults & advisories per test | 1.9 ✓ | 3.9 |
| Dangerous-fault share | 2% | 1% ✓ |
| Average mileage | 113,866 mi | 119,670 mi |
| Sample size (vehicles) | 159,403 | 5 |
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 Sgl5
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Engine covers and under trays fitted limiting view to testable items
- Front Registration plate deteriorated but not likely to be misread (0.1 (b))
- Offside Inner Front Body has slight corrosion (6.1.B.2)
- Nearside Rear Brake pad(s) wearing thin (3.5.1g)
- Offside Rear Brake pad(s) wearing thin (3.5.1g)
Reliability FAQ
On MOT pass rate the Mazda 6 (75%) and Mazda Sgl5 (72%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 6 report Full Mazda Sgl5 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.