Skip to content

Volvo B55 mk111 vs Volvo Unknown: reliability comparison

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

Volvo B55 mk111
50%
MOT pass rate · 1 vehicles
Volvo Unknown
86%
MOT pass rate · 319,034 vehicles
Verdict: On MOT pass rate the Volvo B55 mk111 (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 B55 mk111 Volvo Unknown
MOT pass rate 50% 86% ✓
MOT failure rate 50% 14% ✓
Faults & advisories per test 0.0 ✓ 0.7
Dangerous-fault share — ✓ 4%
Average mileage 6,477 mi 431,427 mi
Sample size (vehicles) 1 319,034

Most common faults

Volvo B55 mk111

  1. Nearside Front position lamp(s) not in good working order (not working) (1.1.4a)
  2. Nearside front brake application uneven (3.8.A.2c)
  3. Offside rear brake recording little or no effort (3.8.A.4a)

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 B55 mk111 (50%) and Volvo Unknown (86%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Volvo B55 mk111 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.