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Mercedes-Benz GLB-Class MOT Check

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

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Free, instant, no sign-up required.

86.0%

Avg Pass Rate

+3.9%

vs Mercedes-Benz Avg

1

Year Ranges

Excellent

Reliability

Mercedes-Benz GLB-Class — MOT Reliability Overview

The Mercedes-Benz GLB-Class has an average MOT pass rate of 86.0%, which is 3.9 percentage points above the Mercedes-Benz brand average of 82.1%. This is a strong result, indicating that the GLB-Class is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

The most common reasons a Mercedes-Benz GLB-Class fails its MOT are lamps, reflectors and electrical equipment, suspension, brakes. If you are preparing your GLB-Class 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 GLB-Class, 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 GLB-Class performs at MOT across different model years.

2019

Based on 8,000 vehicles

86.0%Excellent
Mercedes-Benz average: 82.1%
Dangerous Defects

1.1%

Retest Rate

9.8%

Mileage at 3yr

22k mi

Top MOT Failures — Mercedes-Benz GLB-Class

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

1

Lamps, reflectors and electrical equipment

12.2%
2

Suspension

10.8%
3

Brakes

9.5%
4

Tyres

8.8%
5

Exhaust, fuel and emissions

5.5%
Mercedes-Benz GLB-Class Common Faults & Repair Costs

Where Failures Occur

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

Front

28.0%

Rear

26.0%

Offside

19.0%

Other Mercedes-Benz Models

Compare MOT reliability across Mercedes-Benz models.

Mercedes-Benz C-Class

80.5% pass rate

Mercedes-Benz A-Class

82.8% pass rate

Mercedes-Benz E-Class

79.2% pass rate

Mercedes-Benz GLA-Class

84.5% pass rate

Mercedes-Benz B-Class

79.8% pass rate

Mercedes-Benz GLC-Class

85.2% 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 GLB-Class

Mercedes-Benz GLB-Class — Frequently Asked Questions

Common questions about the Mercedes-Benz GLB-Class MOT and reliability.

What is the MOT pass rate for the Mercedes-Benz GLB-Class?
The average MOT pass rate for the Mercedes-Benz GLB-Class is 86.0% compared to the Mercedes-Benz average of 82.1%. 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 GLB-Class?
The most common MOT failures on the Mercedes-Benz GLB-Class are: Lamps, reflectors and electrical equipment (12.2%), Suspension (10.8%), Brakes (9.5%). These are the components most likely to cause an MOT failure.
Is the Mercedes-Benz GLB-Class reliable?
With an average MOT pass rate of 86.0%, the Mercedes-Benz GLB-Class 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 GLB-Class?
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 GLB-Class?
Typical mileage for the Mercedes-Benz GLB-Class: 22,000 miles at 3 years. Use these benchmarks when evaluating a used GLB-Class to spot vehicles with unusually high or low mileage.

Check Your Mercedes-Benz GLB-Class's MOT History

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

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