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Bmw 330 e vs Bmw 520: reliability comparison

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

Bmw 330 e
90%
MOT pass rate · 3 vehicles
Bmw 520
78%
MOT pass rate · 156,398 vehicles
Verdict: On MOT pass rate the Bmw 330 e (90%) and Bmw 520 (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Bmw 330 e Bmw 520
MOT pass rate 90% ✓ 78%
MOT failure rate 10% ✓ 22%
Faults & advisories per test 1.5 ✓ 1.6
Dangerous-fault share 6% 3% ✓
Average mileage 68,401 mi 134,460 mi
Sample size (vehicles) 3 156,398

Most common faults

Bmw 330 e

  1. Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  2. Oil leak, but not excessive (8.4.1 (a) (i))
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Rear Tyre worn close to legal limit/worn on edge both side (5.2.3 (e))
  6. Offside Rear Tyre has ply or cords exposed (5.2.3 (d) (ii))

Bmw 520

  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. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Under-trays fitted obscuring some underside components
  6. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Bmw 330 e (90%) and Bmw 520 (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 330 e report Full Bmw 520 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.