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Bmw 118 vs Bmw M4 heritage edition s-a: reliability comparison

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

Bmw 118
81%
MOT pass rate · 195,122 vehicles
Bmw M4 heritage edition s-a
91%
MOT pass rate · 81 vehicles
More reliable
Verdict: On MOT pass rate, the Bmw M4 heritage edition s-a is the more reliable of the two — 91% pass first time versus 81%. It's one signal among several; check the full breakdown below.

Head to head

Measure Bmw 118 Bmw M4 heritage edition s-a
MOT pass rate 81% 91% ✓
MOT failure rate 19% 9% ✓
Faults & advisories per test 1.5 0.5 ✓
Dangerous-fault share 4% ✓ 17%
Average mileage 85,676 mi 24,174 mi
Sample size (vehicles) 195,122 81

Most common faults

Bmw 118

  1. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Bmw M4 heritage edition s-a

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside 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 Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Offside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))

Reliability FAQ

On MOT pass rate, the Bmw M4 heritage edition s-a is the more reliable of the two — 91% pass first time versus 81%. It's one signal among several; check the full breakdown below.

Full Bmw 118 report Full Bmw M4 heritage edition s-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.