Mazda 6 vs Mazda Mx-5 monac: 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 Mx-5 monac
56%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Mazda 6 (75%) and Mazda Mx-5 monac (56%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda 6 | Mazda Mx-5 monac |
|---|---|---|
| MOT pass rate | 75% ✓ | 56% |
| MOT failure rate | 25% ✓ | 44% |
| Faults & advisories per test | 1.9 ✓ | 2.9 |
| Dangerous-fault share | 2% | 0% ✓ |
| Average mileage | 113,866 mi | 111,437 mi |
| Sample size (vehicles) | 159,403 | 2 |
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 Mx-5 monac
- Nearside Rear Vehicle structure has slight corrosion (6.1.A.1)
- Offside Rear Vehicle structure has slight corrosion (6.1.A.1)
- Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3)
- Nearside Headlamp not in good working order adversely affecting beam image (1.2.4a)
- Nearside Vehicle structure has an inadequate repair, seriously affecting its strength within 30cm of the body mountings (6.1.B.2)
- Nearside rear brake juddering severely (3.7.A.5b)
Reliability FAQ
On MOT pass rate the Mazda 6 (75%) and Mazda Mx-5 monac (56%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda 6 report Full Mazda Mx-5 monac 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.