Mercedes Benz Gl 320 MOT Check

MOT pass rates, common failures, and reliability data for the Mercedes Benz Gl 320. Check any Gl 320 by registration number below.

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78.3%

Avg Pass Rate

-11.8%

vs Mercedes Benz Avg

Year Ranges

Good

Reliability

Mercedes Benz Gl 320 — MOT Reliability Overview

The Mercedes Benz Gl 320 has an average MOT pass rate of 78.3%, which is 11.8 percentage points below the Mercedes Benz brand average of 90.2%. This is a reasonable result that reflects typical UK reliability standards. Regular servicing and addressing advisories promptly will help keep your Gl 320 on the road.

The most common reasons a Mercedes Benz Gl 320 fails its MOT are a direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, brake pipe damaged or excessively corroded. If you are preparing your Gl 320 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 Gl 320, 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 Gl 320 performs at MOT across different model years.

2009

Based on 215 vehicles

73.0%Average

Mercedes Benz average: 90.2%

Dangerous Defects

3.6%

Retest Rate

17.5%

2008

Based on 181 vehicles

75.7%Good

Mercedes Benz average: 90.2%

Dangerous Defects

5.7%

Retest Rate

18.9%

2007

Based on 647 vehicles

77.4%Good

Mercedes Benz average: 90.2%

Dangerous Defects

4.1%

Retest Rate

19.9%

2006

Based on 118 vehicles

87.3%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

0.0%

Retest Rate

11.6%

Top MOT Failures — Mercedes Benz Gl 320

The most common reasons a Mercedes Benz Gl 320 fails its MOT, aggregated across all year ranges.

A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

6.0%

A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

2.5%

Brake pipe damaged or excessively corroded

2.5%

Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc

1.9%

A flexible brake hose excessively damaged, deteriorated, chafed, twisted or stretched

1.5%

Mercedes Benz Gl 320 Common Faults & Repair Costs

Where Failures Occur

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

Rear Nearside

6.5%

Offside

6.0%

Rear Offside

5.6%

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 Gl 320

Mercedes Benz Gl 320 — Frequently Asked Questions

Common questions about the Mercedes Benz Gl 320 MOT and reliability.

What is the MOT pass rate for the Mercedes Benz Gl 320?

The average MOT pass rate for the Mercedes Benz Gl 320 is 78.3% 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 Gl 320?

The most common MOT failures on the Mercedes Benz Gl 320 are: A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning (6.0%), A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning (2.5%), Brake pipe damaged or excessively corroded (2.5%). These are the components most likely to cause an MOT failure.

Is the Mercedes Benz Gl 320 reliable?

With an average MOT pass rate of 78.3%, the Mercedes Benz Gl 320 is rated as "Good" 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 Gl 320?

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 Gl 320?

Mileage data for the Mercedes Benz Gl 320 is available in the detailed breakdown on this page.

Check Your Mercedes Benz Gl 320's MOT History

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