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Ford Ac cobra vs Ford Fiesta: reliability comparison

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

Ford Ac cobra
76%
MOT pass rate · 6 vehicles
Ford Fiesta
73%
MOT pass rate · 2,835,744 vehicles
Verdict: On MOT pass rate the Ford Ac cobra (76%) and Ford Fiesta (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Ford Ac cobra Ford Fiesta
MOT pass rate 76% ✓ 73%
MOT failure rate 24% ✓ 27%
Faults & advisories per test 1.6 ✓ 2.1
Dangerous-fault share 0% ✓ 2%
Average mileage 14,746 mi 84,529 mi
Sample size (vehicles) 6 2,835,744

Most common faults

Ford Ac cobra

  1. Nearside Front Front wheel bearing has slight play (2.5.A.3c)
  2. Offside Front Front wheel bearing has excessive play (2.5.A.3c)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Stop lamp not working (1.2.1b)
  6. Parking brake: parking brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.C.1b)

Ford Fiesta

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Rear Brake pipe slightly corroded (3.6.B.2c)

Reliability FAQ

On MOT pass rate the Ford Ac cobra (76%) and Ford Fiesta (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Ford Ac cobra report Full Ford Fiesta 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.