Skip to main content
GB
MOT
Checkup

Mercedes Benz GLS MOT Check

MOT pass rates, common failures, and reliability data for the Mercedes Benz GLS. Check any GLS by registration number below.

GB

Free, instant, no sign-up required.

90.9%

Avg Pass Rate

+0.7%

vs Mercedes Benz Avg

4

Year Ranges

Excellent

Reliability

Mercedes Benz GLS — MOT Reliability Overview

The Mercedes Benz GLS has an average MOT pass rate of 90.9%, which is 0.7 percentage points above the Mercedes Benz brand average of 90.2%. This is a strong result, indicating that the GLS is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

The most common reasons a Mercedes Benz GLS fails its MOT are a tyre cords visible or damaged, a tyre seriously damaged, number plate does not conform to the specified requirements. If you are preparing your GLS for its MOT, checking these areas first could save you a retest fee. Our detailed fault analysis includes estimated repair costs for each failure type.

Before buying a used Mercedes Benz GLS, we recommend checking the full MOT history, write-off status, outstanding finance, and stolen vehicle status. These checks can be done for free using the registration number.

MOT Pass Rate by Year

How the Mercedes Benz GLS performs at MOT across different model years.

2019

Based on 1,167 vehicles

91.9%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

2.5%

Retest Rate

8.3%

Mileage at 3yr

49k mi

Mileage at 5yr

77k mi

2018

Based on 1,766 vehicles

89.5%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

3.1%

Retest Rate

12.2%

Mileage at 5yr

76k mi

2017

Based on 1,936 vehicles

91.3%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

2.6%

Retest Rate

10.8%

Mileage at 5yr

82k mi

2016

Based on 1,318 vehicles

91.0%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

2.7%

Retest Rate

9.6%

Top MOT Failures — Mercedes Benz GLS

The most common reasons a Mercedes Benz GLS fails its MOT, aggregated across all year ranges.

1

A tyre cords visible or damaged

1.3%
2

A tyre seriously damaged

1.2%
3

Number plate does not conform to the specified requirements

1.1%
4

Tyre tread depth not in accordance with the requirements

1.1%
5

A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc

0.9%
Mercedes Benz GLS Common Faults & Repair Costs

Where Failures Occur

The areas of the vehicle most commonly flagged during MOT inspections.

Front Nearside

1.5%

Front Offside

1.2%

Rear Nearside

0.7%

Other Mercedes Benz Models

Compare MOT reliability across Mercedes Benz models.

Mercedes Benz E 300

94.2% pass rate

Mercedes Benz E

83.5% pass rate

Mercedes Benz Amg Gla 45 S 4matic+ Auto

92.7% pass rate

Mercedes Benz V

85.8% pass rate

Mercedes Benz Vito 112

87.8% pass rate

Mercedes Benz Sl 500

100.0% pass rate

Useful MOT Guides

Common MOT Failures

The most common reasons UK vehicles fail their MOT — and how to prepare.

MOT Checklist

Pre-MOT checklist to improve your chances of passing first time.

Advisory vs Failure

Understanding the difference between MOT advisories and failures.

See detailed fault analysis for Mercedes Benz GLS

Mercedes Benz GLS — Frequently Asked Questions

Common questions about the Mercedes Benz GLS MOT and reliability.

What is the MOT pass rate for the Mercedes Benz GLS?
The average MOT pass rate for the Mercedes Benz GLS is 90.9% compared to the Mercedes Benz average of 90.2%. Pass rates vary by year — check the year-by-year breakdown on this page for details.
What are the most common MOT failures on a Mercedes Benz GLS?
The most common MOT failures on the Mercedes Benz GLS are: A tyre cords visible or damaged (1.3%), A tyre seriously damaged (1.2%), Number plate does not conform to the specified requirements (1.1%). These are the components most likely to cause an MOT failure.
Is the Mercedes Benz GLS reliable?
With an average MOT pass rate of 90.9%, the Mercedes Benz GLS is rated as "Excellent" for reliability. This is a strong result suggesting good build quality and fewer common defects.
How do I check the MOT history of a Mercedes Benz GLS?
Enter the vehicle's registration number in the search box at the top of this page. You will instantly see the complete MOT history including every test result, mileage readings, advisories, and dangerous defects — completely free.
What mileage should I expect on a Mercedes Benz GLS?
Typical mileage for the Mercedes Benz GLS: 49,117 miles at 3 years, 77,310 miles at 5 years. Use these benchmarks when evaluating a used GLS to spot vehicles with unusually high or low mileage.

Check Your Mercedes Benz GLS's MOT History

Enter the registration number for the full MOT history — free and instant.

GB