2017 Mercedes-Benz Gls: MOT pass rate and reliability

89.8% of 2017 Mercedes-Benz Gls pass the MOT first time, measured across 636 DVSA tests on that model year alone. The average one had covered 65,164 miles.

How the 2017 compares

  • Against all Mercedes-Benz Gls (88.8%, 1,983 tests): +1 points
  • Against all 2017 cars (83.5%): +6.3 points
  • National first-time pass rate, all cars and years: 77%

Every Mercedes-Benz Gls 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 Gls:

Year Pass rate Tests Avg mileage
2016 88.6% 404 73,534
2017 89.8% 636 65,164
2018 87.2% 580 55,433
2019 89.6% 357 46,792

What this means if you are buying a 2017 Gls

The 2017 sits close to the Mercedes-Benz Gls 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 a shade above the middle of the range, still ordinary wear rather than a red flag, but worth checking against the service book for the car's age. On a 2017 Mercedes-Benz Gls the average at test was 65,164 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.

2017 is the strongest year on record for this model at 89.8%, ahead of every other year we hold data for.

Nearby model years

All Mercedes-Benz Gls MOT data · Every model