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Volvo Unknown vs Volvo Xc90 r-design b6 mhev awd auto: reliability comparison

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

Volvo Unknown
86%
MOT pass rate · 319,034 vehicles
Volvo Xc90 r-design b6 mhev awd auto
87%
MOT pass rate · 85 vehicles
Verdict: On MOT pass rate the Volvo Unknown (86%) and Volvo Xc90 r-design b6 mhev awd auto (87%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Volvo Unknown Volvo Xc90 r-design b6 mhev awd auto
MOT pass rate 86% 87% ✓
MOT failure rate 14% 13% ✓
Faults & advisories per test 0.7 ✓ 1.3
Dangerous-fault share 4% ✓ 5%
Average mileage 431,427 mi 47,162 mi
Sample size (vehicles) 319,034 85

Most common faults

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))

Volvo Xc90 r-design b6 mhev awd auto

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

Reliability FAQ

On MOT pass rate the Volvo Unknown (86%) and Volvo Xc90 r-design b6 mhev awd auto (87%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Volvo Unknown report Full Volvo Xc90 r-design b6 mhev awd auto 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.