Mazda Mx-5 vs Mazda Speed convertible: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mazda Mx-5
77%
MOT pass rate · 162,634 vehicles
Mazda Speed convertible
67%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mazda Mx-5 (77%) and Mazda Speed convertible (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mazda Mx-5 | Mazda Speed convertible |
|---|---|---|
| MOT pass rate | 77% ✓ | 67% |
| MOT failure rate | 23% ✓ | 33% |
| Faults & advisories per test | 1.8 | 1.5 ✓ |
| Dangerous-fault share | 1% | 0% ✓ |
| Average mileage | 90,085 mi | 172,524 mi |
| Sample size (vehicles) | 162,634 | 1 |
Most common faults
Mazda Mx-5
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Front Brake pad(s) wearing thin (3.5.1g)
- Rear Brake pad(s) wearing thin (3.5.1g)
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Oil leak, but not excessive (8.4.1 (a) (i))
Mazda Speed convertible
- Accelerator pedal loose
- All brake pipes coated in grease, unable to visually inspect for corrosion
- Nearside Front Body panel slightly loose wing corroded at the bottom and loose (6.2.1 (a) (i))
- Nearside Headlamp aim too low and too far to the right. (1.8)
- Offside Headlamp aim too low (1.8)
- Registration plate lamp not working (1.1.5c)
Reliability FAQ
On MOT pass rate the Mazda Mx-5 (77%) and Mazda Speed convertible (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mazda Mx-5 report Full Mazda Speed convertible 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.