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Ford Fiesta vs Ford Focus st3: reliability comparison

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

Ford Fiesta
73%
MOT pass rate · 2,835,744 vehicles
Ford Focus st3
80%
MOT pass rate · 3 vehicles
Verdict: On MOT pass rate the Ford Fiesta (73%) and Ford Focus st3 (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Ford Fiesta Ford Focus st3
MOT pass rate 73% 80% ✓
MOT failure rate 27% 20% ✓
Faults & advisories per test 2.1 1.6 ✓
Dangerous-fault share 2% ✓ 5%
Average mileage 84,529 mi 85,501 mi
Sample size (vehicles) 2,835,744 3

Most common faults

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)

Ford Focus st3

  1. Offside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))
  2. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  3. Nearside Rear brake caliper return retainer spring missing
  4. Covers not allowing full inspection
  5. Nearside Front Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))
  6. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Ford Fiesta (73%) and Ford Focus st3 (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Ford Fiesta report Full Ford Focus st3 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.