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Mercedes Benz Gl 420 MOT Check

MOT pass rates, common failures, and reliability data for the Mercedes Benz Gl 420. Check any Gl 420 by registration number below.

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96.2%

Avg Pass Rate

+6.0%

vs Mercedes Benz Avg

1

Year Ranges

Excellent

Reliability

Mercedes Benz Gl 420 — MOT Reliability Overview

The Mercedes Benz Gl 420 has an average MOT pass rate of 96.2%, which is 6.0 percentage points above the Mercedes Benz brand average of 90.2%. This is a strong result, indicating that the Gl 420 is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

Before buying a used Mercedes Benz Gl 420, 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 420 performs at MOT across different model years.

2007

Based on 52 vehicles

96.2%Excellent
Mercedes Benz average: 90.2%
Mileage at 10yr

219k mi

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 420

Mercedes Benz Gl 420 — Frequently Asked Questions

Common questions about the Mercedes Benz Gl 420 MOT and reliability.

What is the MOT pass rate for the Mercedes Benz Gl 420?
The average MOT pass rate for the Mercedes Benz Gl 420 is 96.2% 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 420?
Check the detailed breakdown on this page for specific failure data by year range.
Is the Mercedes Benz Gl 420 reliable?
With an average MOT pass rate of 96.2%, the Mercedes Benz Gl 420 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 Gl 420?
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 420?
Typical mileage for the Mercedes Benz Gl 420: 218,878 miles at 10 years. Use these benchmarks when evaluating a used Gl 420 to spot vehicles with unusually high or low mileage.

Check Your Mercedes Benz Gl 420's MOT History

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

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