Mercedes-Benz Gla: MOT pass rate and reliability data

The Mercedes-Benz Gla passes its MOT first time more often than the average UK car, by 8.5 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 65,451 individual Mercedes-Benz Gla tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate85.2%
UK national average76.7%
Difference+8.5 points
Tests analysed65,451
Average mileage at test53,650 miles
Average year of manufacture2017
Reliability rank1,229 of 2,005 models

What this means if you are buying one

A 85.2% first-time pass rate means roughly 15 in every 100 Mercedes-Benz Glas 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 Gla tested had covered 53,650 miles and was built around 2017.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Mercedes-Benz Gla sits 8.5 points above the national average, ranked 1,229 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 Gla 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 Glas at UK salvage auction.

Most common MOT failures on a Mercedes-Benz Gla

  1. Brake lining or pad worn down to wear indicator, 0.4% of tests (2.17x the national rate for this defect)
  2. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 2.4% of tests (1.33x the national rate for this defect)
  3. Tyre tread depth not in accordance with the requirements, 3% of tests
  4. A tyre seriously damaged, 2.6% of tests
  5. a brake lining or pad worn below 1.5mm, 1.9% of tests
  6. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 1.8% of tests
  7. A spring or spring component fractured or seriously weakened, 1.7% of tests
  8. Engine MIL illuminated indicating a malfunction, 1.4% of tests
  9. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1.1% of tests
  10. A tyre cords visible or damaged, 1% of tests

From 65,368 DVSA-tracked Mercedes-Benz Gla tests, 2024. DVSA testers marked 6.56% of these flagged Mercedes-Benz Gla 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 Gla

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 Gla before it actually fails on it.

  1. A transmission shaft flexible coupling excessively deteriorated, 0.1% of tests (2.35x the national rate for this advisory)
  2. Brake disc or drum significantly and obviously worn, 5.7% of tests (1.79x the national rate for this advisory)
  3. Lamp emitted colour, position or intensity not in accordance with the requirements, 1.8% of tests (1.35x the national rate for this advisory)
  4. a brake lining or pad worn below 1.5mm, 11.6% of tests (1.24x the national rate for this advisory), also fails
  5. A tyre seriously damaged, 18.1% of tests (1.17x the national rate for this advisory), also fails
  6. Tyre tread depth not in accordance with the requirements, 26.9% of tests, also fails
  7. Brake disc or drum excessively weakened, insecure or fractured, 9.5% of tests
  8. A suspension pin, bush or joint excessively worn, 2.1% of tests
  9. Number plate inscription missing or illegible, 1.2% of tests
  10. A spring or spring component fractured or seriously weakened, 0.8% of tests, also fails

From 65,368 DVSA-tracked Mercedes-Benz Gla tests, 2024.

Mercedes-Benz Gla pass rate by model year

From its 2014 to its 2020 model year, the Mercedes-Benz Gla's first-time pass rate has risen 6.9 points, from 83.1% to 90%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Mercedes-Benz Gla year:

Mercedes-Benz Gla by fuel type

The Mercedes-Benz Gla's two most-tested fuel types split by 3.5 points: diesel passes first time 84.2% of the time (38,987 tests) against 87.7% for petrol (26,161 tests).

Other Mercedes-Benz models

Models with a similar pass rate

If this car is a salvage or write-off

Embed this data

Run a site about the Mercedes-Benz Gla? Embed the real DVSA pass-rate badge free, linked back to this page.

Mercedes-Benz Gla MOT pass rate badge: 85.2%

<a href="https://www.salvageprophet.co.uk/mot/mercedes-benz-gla"><img src="https://www.salvageprophet.co.uk/badge/mercedes-benz-gla.svg" width="340" height="92" alt="Mercedes-Benz Gla MOT Pass Rate: 85.2% - Salvage Prophet"></a>

Run a garage or parts site? Embed the Mercedes-Benz Gla's top real failure reason instead, linked back here.

Mercedes-Benz Gla most common MOT failure: Brake lining or pad worn down to wear indicator (0.4% of tests)

<a href="https://www.salvageprophet.co.uk/mot/mercedes-benz-gla"><img src="https://www.salvageprophet.co.uk/badge/failure/mercedes-benz-gla.svg" width="340" height="106" alt="Mercedes-Benz Gla most common MOT failure: Brake lining or pad worn down to wear indicator (0.4% of tests) - Salvage Prophet"></a>

All 2,005 models ranked by MOT pass rate