Skip to content

Bmw 520 vs Bmw Convertible: 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 Convertible
70%
MOT pass rate · 9 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw Convertible (70%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Bmw 520 Bmw Convertible
MOT pass rate 78% ✓ 70%
MOT failure rate 22% ✓ 30%
Faults & advisories per test 1.6 ✓ 2.8
Dangerous-fault share 3% 0% ✓
Average mileage 134,460 mi 141,048 mi
Sample size (vehicles) 156,398 9

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 Convertible

  1. Oil leak
  2. Rear Brake pad(s) wearing thin (3.5.1g)
  3. Oil leak, but not excessive (8.4.1 (a) (i))
  4. Offside Front Suspension arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2)
  5. Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  6. Offside Rear Shock absorber has a light misting of oil (2.7.3)

Reliability FAQ

On MOT pass rate the Bmw 520 (78%) and Bmw Convertible (70%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 520 report Full Bmw Convertible 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.