Mercedes-Benz MOT pass rates and common failures

Mercedes-Benz A-Class, GLA and GLC are common used prestige picks. Compare MOT pass rates and the defect mix at 5–10 years before you shortlist on badge alone.

MOT pass rate is not a reliability rating — it is the share of recorded DVSA tests that passed for each make and model in this age band. Use Compare for two models, or browse Mercedes-Benz MOT reports.

1.6 million Mercedes-Benz vehicles in the UK MOT source dataset (all registration years). In the 5–10 years old (registration era) age band: 2.3M MOT tests across all models — the same metric shown in the brand matrix drawer. Model cards below are per-model totals in that band.

Data created

Top Mercedes-Benz models by MOT test volume

The four models with the most MOT tests in our Mercedes-Benz lineup at 5–10 years. Pass rate and failure category split are public; defect codes and severity detail require credits.

Mercedes-Benz A-Class

1.1M MOT tests in age band · 86.6% pass rate

86.6%

Failure breakdown (public summary)

  • Owner neglect
  • Wear & tear
  • Systemic
  • Other
Compare A-CLASS with another model

Mercedes-Benz GLA

336k MOT tests in age band · 88% pass rate

88%

Failure breakdown (public summary)

  • Owner neglect
  • Wear & tear
  • Systemic
  • Other
Compare GLA with another model

Mercedes-Benz GLC

299k MOT tests in age band · 88.9% pass rate

88.9%

Failure breakdown (public summary)

  • Owner neglect
  • Wear & tear
  • Systemic
  • Other
Compare GLC with another model

Mercedes-Benz CLA

213k MOT tests in age band · 85.1% pass rate

85.1%

Failure breakdown (public summary)

  • Owner neglect
  • Wear & tear
  • Systemic
  • Other
Compare CLA with another model

What a full Mercedes-Benz A-CLASS report looks like

Vehicle age: 5–10 years old (registration era). Pass rate and category split above are live age-band aggregates; the sections below show the report layout subscribers unlock.

Pass rate

86.6%

Live age-band stat

Maintenance compliance

74 / 100

Mileage-normalised score

Defects per 1k miles

7.1

vs age-band percentile

Common systemic components

  • Suspension arm bush worn excessively (1.1.11 (c))
  • Coil spring fractured or broken (1.1.2 (a))
  • Brake disc worn, pitted or scored (1.1.14 (a) (ii))
  • Excessive play in a lower suspension ball joint (2.1.3 (b))

Unlock DVSA-coded defects, severity splits, first-MOT patterns, and year-on-year trends for MERCEDES-BENZ A-CLASS

More brand research

Mercedes-Benz MOT data — common questions

Does a good Mercedes-Benz MOT pass rate mean the car is reliable?

No. MOT pass rate is not a reliability rating. It is the share of recorded DVSA tests that passed for that Mercedes-Benz model in this 5–10 year band. It does not prove breakdowns, repair cost, or the condition of one seller’s car.

Which Mercedes-Benz models have the most MOT tests on this page?

The four highest-volume models in this age band are A-Class (86.6% pass rate, 1.1M tests); GLA (88% pass rate, 336k tests); GLC (88.9% pass rate, 299k tests); CLA (85.1% pass rate, 213k tests). Pass rate is a test outcome, not a ranking of the most reliable car.

Is this Mercedes-Benz page a registration MOT check?

No. This is make and model research from aggregated DVSA tests. For one vehicle, use GOV.UK MOT history. Use Compare to put two models on the same age band.