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Bmw 3 series vs Bmw 320i m sport pro edition auto: reliability comparison

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

Bmw 3 series
75%
MOT pass rate · 996,044 vehicles
Bmw 320i m sport pro edition auto
87%
MOT pass rate · 31 vehicles
Verdict: On MOT pass rate the Bmw 3 series (75%) and Bmw 320i m sport pro edition auto (87%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Bmw 3 series Bmw 320i m sport pro edition auto
MOT pass rate 75% 87% ✓
MOT failure rate 25% 13% ✓
Faults & advisories per test 2.0 0.6 ✓
Dangerous-fault share 2% ✓ 15%
Average mileage 128,558 mi 36,529 mi
Sample size (vehicles) 996,044 31

Most common faults

Bmw 3 series

  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. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Under-trays fitted obscuring some underside components
  6. Oil leak, but not excessive (8.4.1 (a) (i))

Bmw 320i m sport pro edition auto

  1. Nearside Front Shock absorbers has light misting of oil (5.3.2 (b))
  2. Nearside Front Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))
  3. Offside Front Shock absorbers has light misting of oil (5.3.2 (b))
  4. Offside Front Inner Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Offside Front Nail in tyre
  6. Offside Rear Tyre worn close to legal limit/worn on edge 3mm (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Bmw 3 series (75%) and Bmw 320i m sport pro edition auto (87%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 3 series report Full Bmw 320i m sport pro edition auto 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.