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Bmw 520 vs Bmw 540i xdrive m sport ed mhev a: reliability comparison

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

Bmw 520
78%
MOT pass rate · 156,398 vehicles
Bmw 540i xdrive m sport ed mhev a
78%
MOT pass rate · 12 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw 540i xdrive m sport ed mhev a (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Bmw 520 Bmw 540i xdrive m sport ed mhev a
MOT pass rate 78% 78%
MOT failure rate 22% 22%
Faults & advisories per test 1.6 1.1 ✓
Dangerous-fault share 3% ✓ 22%
Average mileage 134,460 mi 58,487 mi
Sample size (vehicles) 156,398 12

Most common faults

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))

Bmw 540i xdrive m sport ed mhev a

  1. Offside Front Road wheel slightly distorted (5.2.2 (c) (i))
  2. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Rear Child Seat fitted not allowing full inspection of adult belt
  4. Nearside Rear Road wheel fractured (5.2.2 (a))
  5. Offside Side repeater not working (4.4.1 (a) (ii))
  6. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))

Reliability FAQ

On MOT pass rate the Bmw 520 (78%) and Bmw 540i xdrive m sport ed mhev a (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 520 report Full Bmw 540i xdrive m sport ed 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.