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Mazda Cx-30 sport lux mhev vs Mazda Mx-5: reliability comparison

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

Mazda Cx-30 sport lux mhev
93%
MOT pass rate · 491 vehicles
More reliable
Mazda Mx-5
77%
MOT pass rate · 162,634 vehicles
Verdict: On MOT pass rate, the Mazda Cx-30 sport lux mhev is the more reliable of the two — 93% pass first time versus 77%. It's one signal among several; check the full breakdown below.

Head to head

Measure Mazda Cx-30 sport lux mhev Mazda Mx-5
MOT pass rate 93% ✓ 77%
MOT failure rate 7% ✓ 23%
Faults & advisories per test 0.9 ✓ 1.8
Dangerous-fault share 3% 1% ✓
Average mileage 38,641 mi 90,085 mi
Sample size (vehicles) 491 162,634

Most common faults

Mazda Cx-30 sport lux mhev

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  4. Offside Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  5. Nearside Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  6. Rear Registration plate deteriorated but not likely to be misread (0.1 (b))

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 Cx-30 sport lux mhev is the more reliable of the two — 93% pass first time versus 77%. It's one signal among several; check the full breakdown below.

Full Mazda Cx-30 sport lux mhev 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.