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Mazda 3 vs Mazda Cx-30 gt sport edition mhev: reliability comparison

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

Mazda 3
78%
MOT pass rate · 164,058 vehicles
Mazda Cx-30 gt sport edition mhev
95%
MOT pass rate · 255 vehicles
More reliable
Verdict: On MOT pass rate, the Mazda Cx-30 gt sport edition mhev is the more reliable of the two — 95% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Head to head

Measure Mazda 3 Mazda Cx-30 gt sport edition mhev
MOT pass rate 78% 95% ✓
MOT failure rate 22% 5% ✓
Faults & advisories per test 2.0 0.8 ✓
Dangerous-fault share 3% 3%
Average mileage 90,915 mi 23,832 mi
Sample size (vehicles) 164,058 255

Most common faults

Mazda 3

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))

Mazda Cx-30 gt sport edition 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. Nearside Rear Shock absorbers has light misting of oil (5.3.2 (b))
  5. Offside Rear Shock absorbers has light misting of oil (5.3.2 (b))
  6. Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Reliability FAQ

On MOT pass rate, the Mazda Cx-30 gt sport edition mhev is the more reliable of the two — 95% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Full Mazda 3 report Full Mazda Cx-30 gt sport edition mhev 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.