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Mercedes-benz Sprinter vs Mercedes-benz Unknown: reliability comparison

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

Mercedes-benz Sprinter
72%
MOT pass rate · 408,073 vehicles
Mercedes-benz Unknown
85%
MOT pass rate · 77,285 vehicles
More reliable
Verdict: On MOT pass rate, the Mercedes-benz Unknown is the more reliable of the two — 85% pass first time versus 72%. It's one signal among several; check the full breakdown below.

Head to head

Measure Mercedes-benz Sprinter Mercedes-benz Unknown
MOT pass rate 72% 85% ✓
MOT failure rate 28% 15% ✓
Faults & advisories per test 2.8 1.1 ✓
Dangerous-fault share 2% ✓ 3%
Average mileage 191,248 mi 145,790 mi
Sample size (vehicles) 408,073 77,285

Most common faults

Mercedes-benz Sprinter

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Oil leak, but not excessive (8.4.1 (a) (i))
  3. Parking brake efficiency below requirements (1.4.2 (a) (i))
  4. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
  5. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)

Mercedes-benz Unknown

  1. Oil leak, but not excessive (8.4.1 (a) (i))
  2. Nearside Rear 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. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))

Reliability FAQ

On MOT pass rate, the Mercedes-benz Unknown is the more reliable of the two — 85% pass first time versus 72%. It's one signal among several; check the full breakdown below.

Full Mercedes-benz Sprinter report Full Mercedes-benz 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.