Skip to content

Mercedes-benz A-class vs Mercedes-benz S 580 l amg line prem exec e a: reliability comparison

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

Mercedes-benz A-class
78%
MOT pass rate · 362,612 vehicles
Mercedes-benz S 580 l amg line prem exec e a
94%
MOT pass rate · 19 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz S 580 l amg line prem exec e a (94%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz A-class Mercedes-benz S 580 l amg line prem exec e a
MOT pass rate 78% 94% ✓
MOT failure rate 22% 6% ✓
Faults & advisories per test 1.6 0.4 ✓
Dangerous-fault share 3% ✓ 14%
Average mileage 86,210 mi 69,687 mi
Sample size (vehicles) 362,612 19

Most common faults

Mercedes-benz A-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. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Under-trays fitted obscuring some underside components
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Mercedes-benz S 580 l amg line prem exec e a

  1. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
  3. Nearside Front Tyre slightly damaged (5.2.3 (d) (ii))
  4. Nearside Front Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))
  5. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz S 580 l amg line prem exec e a (94%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz A-class report Full Mercedes-benz S 580 l amg line prem exec e a 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.