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Bmw 316 vs Bmw 840: reliability comparison

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

Bmw 316
69%
MOT pass rate · 157,337 vehicles
Bmw 840
74%
MOT pass rate · 1,840 vehicles
More reliable
Verdict: On MOT pass rate, the Bmw 840 is the more reliable of the two — 74% pass first time versus 69%. It's one signal among several; check the full breakdown below.

Head to head

Measure Bmw 316 Bmw 840
MOT pass rate 69% 74% ✓
MOT failure rate 31% 26% ✓
Faults & advisories per test 2.3 2.3
Dangerous-fault share 1% 1%
Average mileage 124,177 mi 117,146 mi
Sample size (vehicles) 157,337 1,840

Most common faults

Bmw 316

  1. Oil leak
  2. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Parking brake: efficiency below requirements (3.7.B.7)
  5. Nearside Rear Brake pipe slightly corroded (3.6.B.2c)
  6. Offside Rear Brake pipe slightly corroded (3.6.B.2c)

Bmw 840

  1. Fuel pipe/s corroded
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Oil leak, but not excessive (8.4.1 (a) (i))
  5. Oil leak
  6. Fuel Pipe/s corroded

Reliability FAQ

On MOT pass rate, the Bmw 840 is the more reliable of the two — 74% pass first time versus 69%. It's one signal among several; check the full breakdown below.

Full Bmw 316 report Full Bmw 840 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.