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Ford Fiesta vs Ford Fiesta st-line x ed t mhev a: 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 Fiesta st-line x ed t mhev a
91%
MOT pass rate · 441 vehicles
More reliable
Verdict: On MOT pass rate, the Ford Fiesta st-line x ed t mhev a is the more reliable of the two — 91% pass first time versus 73%. It's one signal among several; check the full breakdown below.

Head to head

Measure Ford Fiesta Ford Fiesta st-line x ed t mhev a
MOT pass rate 73% 91% ✓
MOT failure rate 27% 9% ✓
Faults & advisories per test 2.1 0.6 ✓
Dangerous-fault share 2% ✓ 7%
Average mileage 84,529 mi 20,155 mi
Sample size (vehicles) 2,835,744 441

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 Fiesta st-line x ed t mhev a

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Front Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))
  5. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Offside Front Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))

Reliability FAQ

On MOT pass rate, the Ford Fiesta st-line x ed t mhev a is the more reliable of the two — 91% pass first time versus 73%. It's one signal among several; check the full breakdown below.

Full Ford Fiesta report Full Ford Fiesta st-line x ed t mhev a 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.