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Ford Mondeo vs Ford St 170: reliability comparison

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

Ford Mondeo
70%
MOT pass rate · 1,212,823 vehicles
Ford St 170
73%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Ford Mondeo (70%) and Ford St 170 (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Ford Mondeo Ford St 170
MOT pass rate 70% 73% ✓
MOT failure rate 30% 27% ✓
Faults & advisories per test 2.2 ✓ 3.1
Dangerous-fault share 1% 0% ✓
Average mileage 130,467 mi 93,256 mi
Sample size (vehicles) 1,212,823 1

Most common faults

Ford Mondeo

  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. 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. Parking brake: efficiency below requirements (3.7.B.7)
  6. Front Brake pad(s) wearing thin (3.5.1g)

Ford St 170

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Nearside Rear Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
  3. Offside Rear Trailing arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
  4. Nearside Rear coil spring corroded (2.4.C.1b)
  5. Offside Rear coil spring corroded (2.4.C.1b)
  6. Offside Rear Brake pad(s) wearing thin (3.5.1g)

Reliability FAQ

On MOT pass rate the Ford Mondeo (70%) and Ford St 170 (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Ford Mondeo report Full Ford St 170 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.