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Bmw 330e sport auto vs Bmw 520: reliability comparison

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

Bmw 330e sport auto
86%
MOT pass rate · 3,370 vehicles
More reliable
Bmw 520
78%
MOT pass rate · 156,398 vehicles
Verdict: On MOT pass rate, the Bmw 330e sport auto is the more reliable of the two — 86% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Head to head

Measure Bmw 330e sport auto Bmw 520
MOT pass rate 86% ✓ 78%
MOT failure rate 14% ✓ 22%
Faults & advisories per test 0.9 ✓ 1.6
Dangerous-fault share 9% 3% ✓
Average mileage 54,431 mi 134,460 mi
Sample size (vehicles) 3,370 156,398

Most common faults

Bmw 330e sport auto

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  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. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
  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 330e sport auto is the more reliable of the two — 86% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Full Bmw 330e sport auto 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.