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Mazda 30sport vs Mazda Mx-5: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Mazda 30sport
59%
MOT pass rate · 1 vehicles
Mazda Mx-5
77%
MOT pass rate · 162,634 vehicles
Verdict: On MOT pass rate the Mazda 30sport (59%) and Mazda Mx-5 (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mazda 30sport Mazda Mx-5
MOT pass rate 59% 77% ✓
MOT failure rate 41% 23% ✓
Faults & advisories per test 6.0 1.8 ✓
Dangerous-fault share 0% ✓ 1%
Average mileage 120,109 mi 90,085 mi
Sample size (vehicles) 1 162,634

Most common faults

Mazda 30sport

  1. Nearside Rear Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))
  2. Offside Rear Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))
  3. Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
  4. Nearside Front Inner brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
  5. Offside Front Inner brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
  6. Nearside Rear Suspension arm pin or bush worn but not resulting in excessive movement Trailing arm front bush (5.3.4 (a) (i))

Mazda Mx-5

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Front Brake pad(s) wearing thin (3.5.1g)
  4. Rear Brake pad(s) wearing thin (3.5.1g)
  5. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Oil leak, but not excessive (8.4.1 (a) (i))

Reliability FAQ

On MOT pass rate the Mazda 30sport (59%) and Mazda Mx-5 (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mazda 30sport report Full Mazda Mx-5 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.