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Bmw 520 vs Bmw X1 sdrive 18d sprt prem 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 X1 sdrive 18d sprt prem mhev a
96%
MOT pass rate · 59 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw X1 sdrive 18d sprt prem mhev a (96%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Bmw 520 Bmw X1 sdrive 18d sprt prem mhev a
MOT pass rate 78% 96% ✓
MOT failure rate 22% 4% ✓
Faults & advisories per test 1.6 0.5 ✓
Dangerous-fault share 3% ✓ 8%
Average mileage 134,460 mi 29,072 mi
Sample size (vehicles) 156,398 59

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 X1 sdrive 18d sprt prem mhev a

  1. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  2. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  3. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  4. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Nearside Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  6. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Bmw 520 (78%) and Bmw X1 sdrive 18d sprt prem mhev a (96%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Bmw 520 report Full Bmw X1 sdrive 18d sprt prem 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.