Skip to content

Mercedes-benz B-class vs Mercedes-benz E: reliability comparison

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

Mercedes-benz B-class
79%
MOT pass rate · 77,758 vehicles
Mercedes-benz E
79%
MOT pass rate · 429,719 vehicles
Verdict: On MOT pass rate the Mercedes-benz B-class (79%) and Mercedes-benz E (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz B-class Mercedes-benz E
MOT pass rate 79% 79%
MOT failure rate 21% 21%
Faults & advisories per test 1.6 1.6
Dangerous-fault share 3% 3%
Average mileage 87,583 mi 124,278 mi
Sample size (vehicles) 77,758 429,719

Most common faults

Mercedes-benz B-class

  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. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  4. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Under-trays fitted obscuring some underside components
  6. Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Mercedes-benz E

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Front Tyre worn close to the legal limit (4.1.E.1)

Reliability FAQ

On MOT pass rate the Mercedes-benz B-class (79%) and Mercedes-benz E (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz B-class report Full Mercedes-benz E 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.