Mazda 6 vs Mazda Demio gsi: 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 Demio gsi
65%
MOT pass rate · 18 vehicles
Verdict: On MOT pass rate the Mazda 6 (75%) and Mazda Demio gsi (65%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 6 | Mazda Demio gsi |
|---|---|---|
| MOT pass rate | 75% ✓ | 65% |
| MOT failure rate | 25% ✓ | 35% |
| Faults & advisories per test | 1.9 ✓ | 2.9 |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 113,866 mi | 124,705 mi |
| Sample size (vehicles) | 159,403 | 18 |
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 Demio gsi
- Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
- Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.5b)
- Nearside Inner Rear Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
- Nearside Outer Seat belt anchorage prescribed area is corroded but not considered excessive (5.2.6)
- Offside Inner Rear Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
- Offside Outer Seat belt anchorage prescribed area is corroded but not considered excessive (5.2.6)
Reliability FAQ
On MOT pass rate the Mazda 6 (75%) and Mazda Demio gsi (65%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 6 report Full Mazda Demio gsi 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.