2016 · 8 years old at test · Diesel mostly

2016 Mercedes-Benz GLS MOT pass rate and common faults

355 MOT tests in 2024. 86.8% passed first time, compared with 76.6% for all cars the same age.

113Well above average
Passed first time86.8%
Failed or needed repairs13.2%
Typical mileage at test70,000

Most common reasons for failing

Share of all 355 tests where this item caused a failure.

  1. Tyres - condition: has ply or cords exposed3.1%
    21 marked dangerous
  2. Tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords2.0%
  3. Tread depth below requirements of 1.6mm2.0%
    9 marked dangerous
  4. Washers: not working0.8%
  5. Brake pads: less than 1.5 mm thick0.8%
    6 marked dangerous
  6. Tyres - condition: has a bulge, caused by separation or partial failure of its structure0.6%
    4 marked dangerous
  7. Tyre pressure monitoring system: malfunctioning or obviously inoperative0.6%
  8. Headlamp aim: too high0.6%
  9. Brake pads: worn down to wear indicator0.6%
  10. Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm0.3%
    1 marked dangerous

Problem areas

Failure items found per 100 tests, by part of the car.

  1. Tyres9.0%
  2. Brakes2.0%
  3. Visibility (wipers, screen, mirrors)1.4%
  4. Lights & electrics1.4%
  5. Emissions & leaks1.4%
  6. Body & chassis1.1%
  7. Wheels0.3%
  8. Number plates & VIN0.3%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tread depth below requirements of 1.6mm15.5%
  2. Brake pads: less than 1.5 mm thick7.0%
  3. Brake discs: in such a condition that it is seriously weakened7.0%
  4. Brake discs: significantly and obviously worn5.1%
  5. Non-component advisories: Child Seat fitted not allowing full inspection of adult belt3.1%

What this means if you are buying one

This model year does better than most cars its age, so it is a reasonable used buy on MOT record alone. Before buying, check the area that fails most: tyres - condition: has ply or cords exposed. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

All GLS years2017 GLS →

Questions

What is the MOT pass rate for a 2016 Mercedes-Benz GLS?

In 2024, 86.8% of 2016 Mercedes-Benz GLS cars passed their MOT first time, across 355 tests. The average for all 8-year-old cars was 76.6%.

What are the most common MOT failures on a 2016 Mercedes-Benz GLS?

The most common failure reasons were tyres - condition: has ply or cords exposed; tyres - condition: has a cut in excess of the requirements deep enough to reach the ply or cords; tread depth below requirements of 1.6mm. The biggest problem area was tyres.

Is the 2016 Mercedes-Benz GLS reliable at MOT time?

Its MOT Rank score is 113, which is well above average for a car of its age (100 means exactly average).