Mercedes-Benz Glc: MOT pass rate and reliability data

The Mercedes-Benz Glc passes its MOT first time more often than the average UK car, by 11.1 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 64,858 individual Mercedes-Benz Glc tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate87.8%
UK national average76.7%
Difference+11.1 points
Tests analysed64,858
Average mileage at test52,526 miles
Average year of manufacture2018
Reliability rank1,011 of 2,005 models

What this means if you are buying one

A 87.8% first-time pass rate means roughly 12 in every 100 Mercedes-Benz Glcs presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Mercedes-Benz Glc tested had covered 52,526 miles and was built around 2018.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Mercedes-Benz Glc sits 11.1 points above the national average, ranked 1,011 of 2,005 models. On one bought as repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Mercedes-Benz Glc rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see recorded closing bids for damaged Mercedes-Benz Glcs at UK salvage auction.

Most common MOT failures on a Mercedes-Benz Glc

  1. Brake lining or pad worn down to wear indicator, 0.6% of tests (2.93x the national rate for this defect)
  2. Number plate does not conform to the specified requirements, 0.4% of tests (2.07x the national rate for this defect)
  3. A suspension pin, bush or joint excessively worn, 3.6% of tests
  4. Tyre tread depth not in accordance with the requirements, 2.7% of tests
  5. A tyre seriously damaged, 2.6% of tests
  6. A tyre cords visible or damaged, 1.6% of tests
  7. Engine MIL illuminated indicating a malfunction, 1.2% of tests
  8. a brake lining or pad worn below 1.5mm, 1.1% of tests
  9. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 0.8% of tests
  10. A spring or spring component fractured or seriously weakened, 0.6% of tests

From 64,785 DVSA-tracked Mercedes-Benz Glc tests, 2024. DVSA testers marked 6.46% of these flagged Mercedes-Benz Glc defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a Mercedes-Benz Glc

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. A different list from the failures above: what testers are noting on a Mercedes-Benz Glc before it actually fails on it.

  1. A transmission shaft flexible coupling excessively deteriorated, 0.1% of tests (2.25x the national rate for this advisory)
  2. Brake disc or drum significantly and obviously worn, 4.9% of tests (1.54x the national rate for this advisory)
  3. Tyre tread depth not in accordance with the requirements, 29% of tests, also fails
  4. a brake lining or pad worn below 1.5mm, 10.7% of tests, also fails
  5. A tyre seriously damaged, 10.1% of tests, also fails
  6. A suspension pin, bush or joint excessively worn, 8.4% of tests, also fails
  7. Brake disc or drum excessively weakened, insecure or fractured, 6.8% of tests
  8. Number plate inscription missing or illegible, 1.1% of tests
  9. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.3% of tests
  10. A seat belt webbing or flexible stalk significantly stretched or weakened, 0.2% of tests

From 64,785 DVSA-tracked Mercedes-Benz Glc tests, 2024.

Mercedes-Benz Glc pass rate by model year

From its 2015 to its 2021 model year, the Mercedes-Benz Glc's first-time pass rate has risen 8.9 points, from 84.2% to 93.1%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Mercedes-Benz Glc year:

Mercedes-Benz Glc by fuel type

The Mercedes-Benz Glc's two most-tested fuel types split by 2.2 points: diesel passes first time 87.8% of the time (53,068 tests) against 90% for petrol (11,497 tests).

Other Mercedes-Benz models

Models with a similar pass rate

If this car is a salvage or write-off

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Mercedes-Benz Glc MOT pass rate badge: 87.8%

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Mercedes-Benz Glc most common MOT failure: Brake lining or pad worn down to wear indicator (0.6% of tests)

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All 2,005 models ranked by MOT pass rate