2017 Mercedes-Benz Gla: MOT pass rate and reliability

84.6% of 2017 Mercedes-Benz Glas pass the MOT first time, measured across 12,765 DVSA tests on that model year alone. The average one had covered 55,438 miles.

How the 2017 compares

  • Against all Mercedes-Benz Glas (85.6%, 65,148 tests): -1 points
  • Against all 2017 cars (83.5%): +1.1 points
  • National first-time pass rate, all cars and years: 77%

Every Mercedes-Benz Gla model year

Pass rates fall as cars age, so the only fair comparison for a 2017 car is other cars of the same age. The full run for the Mercedes-Benz Gla:

Year Pass rate Tests Avg mileage
2014 83.1% 3,448 76,245
2015 82.4% 8,844 71,896
2016 83.1% 10,605 64,926
2017 84.6% 12,765 55,438
2018 87.7% 16,350 45,781
2019 88.7% 11,773 37,724
2020 90% 1,360 30,564

What this means if you are buying a 2017 Gla

The 2017 sits close to the Mercedes-Benz Gla average, so there is no strong model-year signal either way. Judge the individual car on its own history. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.

What a 9-year-old car fails on

A 2017 car is 9 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:

  • Lights and electrical: 10.36% of all cars tested
  • Suspension: 8.65% of all cars tested
  • Tyres: 6.23% of all cars tested
  • Brakes: 6.1% of all cars tested
  • Visibility: wipers, washers, glass: 4.65% of all cars tested
  • Body, chassis and structure: 3.18% of all cars tested

That is around average, so condition and service history will tell you more than the odometer does. On a 2017 Mercedes-Benz Gla the average at test was 55,438 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.

The strongest year for this model is 2020 at 90%, and the weakest in our data is 2015 at 82.4%. That 7.6 point spread across the model's life is why comparing a 2017 car against a newer one tells you very little.

Nearby model years

All Mercedes-Benz Gla MOT data · Every model