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Volvo Dl vs Volvo Unknown: reliability comparison

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

Volvo Dl
50%
MOT pass rate · 1 vehicles
Volvo Unknown
86%
MOT pass rate · 319,034 vehicles
Verdict: On MOT pass rate the Volvo Dl (50%) and Volvo Unknown (86%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Volvo Dl Volvo Unknown
MOT pass rate 50% 86% ✓
MOT failure rate 50% 14% ✓
Faults & advisories per test 4.8 0.7 ✓
Dangerous-fault share 2% ✓ 4%
Average mileage — 431,427 mi
Sample size (vehicles) 1 319,034

Most common faults

Volvo Dl

  1. Nearside Registration plate lamp not working (1.1.C.1d)
  2. Nearside Rear Brake hose has slight corrosion to ferrules (3.6.B.4e)
  3. Offside Rear Shock absorber has a light misting of oil (2.7.3)
  4. Front Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
  5. Nearside Rear Service brake binding but not excessively (1.2.1 (f))
  6. Nearside Rear Tyre worn close to legal limit/worn on edge inner edge wear (5.2.3 (e))

Volvo Unknown

  1. Oil leak, but not excessive (8.4.1 (a) (i))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Parking brake efficiency below requirements (1.4.2 (a) (i))
  5. Service brake efficiency below requirements (1.2.2 (a) (i))
  6. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Reliability FAQ

On MOT pass rate the Volvo Dl (50%) and Volvo Unknown (86%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Volvo Dl report Full Volvo Unknown 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.