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Bmw 520 vs Bmw T11: 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 T11
82%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw T11 (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Bmw 520 Bmw T11
MOT pass rate 78% 82% ✓
MOT failure rate 22% 18% ✓
Faults & advisories per test 1.6 1.2 ✓
Dangerous-fault share 3% 0% ✓
Average mileage 134,460 mi 84,622 mi
Sample size (vehicles) 156,398 1

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 T11

  1. Rear Exhaust has a minor leak of exhaust gases (7.1.2)
  2. Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
  3. Nearside Outer Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Seat belt stitching slightly frayed (5.2.2b)
  5. Offside Outer Front Tyre worn close to the legal limit (4.1.E.1)
  6. rear trailing arms slight corrosion

Reliability FAQ

On MOT pass rate the Bmw 520 (78%) and Bmw T11 (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 520 report Full Bmw T11 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.