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Bmw 3 series vs Bmw X4 xdrive20d m sport x mhev a: 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 X4 xdrive20d m sport x mhev a
92%
MOT pass rate · 58 vehicles
Verdict: On MOT pass rate the Bmw 3 series (75%) and Bmw X4 xdrive20d m sport x mhev a (92%) 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 X4 xdrive20d m sport x mhev a
MOT pass rate 75% 92% ✓
MOT failure rate 25% 8% ✓
Faults & advisories per test 2.0 0.5 ✓
Dangerous-fault share 2% 0% ✓
Average mileage 128,558 mi 41,066 mi
Sample size (vehicles) 996,044 58

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 X4 xdrive20d m sport x mhev a

  1. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  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 Nail in tyre
  6. Offside Front Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))

Reliability FAQ

On MOT pass rate the Bmw 3 series (75%) and Bmw X4 xdrive20d m sport x mhev a (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 3 series report Full Bmw X4 xdrive20d m sport x 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.