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Mazda Demio gsi vs Mazda Mx-5: reliability comparison

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

Mazda Demio gsi
65%
MOT pass rate · 18 vehicles
Mazda Mx-5
77%
MOT pass rate · 162,634 vehicles
Verdict: On MOT pass rate the Mazda Demio gsi (65%) 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 Demio gsi Mazda Mx-5
MOT pass rate 65% 77% ✓
MOT failure rate 35% 23% ✓
Faults & advisories per test 2.9 1.8 ✓
Dangerous-fault share 0% ✓ 1%
Average mileage 124,705 mi 90,085 mi
Sample size (vehicles) 18 162,634

Most common faults

Mazda Demio gsi

  1. Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  2. Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.5b)
  3. Nearside Inner Rear Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
  4. Nearside Outer Seat belt anchorage prescribed area is corroded but not considered excessive (5.2.6)
  5. Offside Inner Rear Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
  6. Offside Outer Seat belt anchorage prescribed area is corroded but not considered excessive (5.2.6)

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 Demio gsi (65%) and Mazda Mx-5 (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mazda Demio gsi 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.