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Mazda 6 tsd vs Mazda Mx-5: reliability comparison

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

Mazda 6 tsd
80%
MOT pass rate · 1 vehicles
Mazda Mx-5
77%
MOT pass rate · 162,634 vehicles
Verdict: On MOT pass rate the Mazda 6 tsd (80%) 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 6 tsd Mazda Mx-5
MOT pass rate 80% ✓ 77%
MOT failure rate 20% ✓ 23%
Faults & advisories per test 1.1 ✓ 1.8
Dangerous-fault share 0% ✓ 1%
Average mileage 161,896 mi 90,085 mi
Sample size (vehicles) 1 162,634

Most common faults

Mazda 6 tsd

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Child seat fitted not allowing full inspection of adult belt
  3. Engine covers fitted obscuring some components in the engine bay
  4. Under-trays fitted obscuring some underside components
  5. Child Seat fitted
  6. Nearside Front Track rod end ball joint dust cover deteriorated, but preventing the ingress of dirt rubber split (2.2.C.1c)

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 6 tsd (80%) and Mazda Mx-5 (77%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mazda 6 tsd 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.