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Mercedes-Benz A-Class MOT Check

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

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82.8%

Avg Pass Rate

+0.7%

vs Mercedes-Benz Avg

1

Year Ranges

Good

Reliability

Mercedes-Benz A-Class — MOT Reliability Overview

The Mercedes-Benz A-Class has an average MOT pass rate of 82.8%, which is 0.7 percentage points above the Mercedes-Benz brand average of 82.1%. This is a strong result, indicating that the A-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 A-Class fails its MOT are lamps, reflectors and electrical equipment, suspension, brakes. If you are preparing your A-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.

Typical mileage for the A-Class is around 38,000 miles at 5 years. When evaluating a used A-Class, compare the odometer reading against these benchmarks. Significantly lower mileage than expected could indicate a clocked vehicle — run a free mileage check to verify.

Before buying a used Mercedes-Benz A-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 A-Class performs at MOT across different model years.

2004

Based on 75,000 vehicles

82.8%Good
Mercedes-Benz average: 82.1%
Dangerous Defects

1.5%

Retest Rate

12.2%

Mileage at 3yr

22k mi

Mileage at 5yr

38k mi

Mileage at 10yr

72k mi

Top MOT Failures — Mercedes-Benz A-Class

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

1

Lamps, reflectors and electrical equipment

14.8%
2

Suspension

13.5%
3

Brakes

11.8%
4

Tyres

10.0%
5

Exhaust, fuel and emissions

7.8%
Mercedes-Benz A-Class Common Faults & Repair Costs

Where Failures Occur

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

Front

31.0%

Rear

28.0%

Offside

20.0%

Typical Mileage — Mercedes-Benz A-Class

Average mileage readings recorded at MOT tests for the 2004 model year range. Use these benchmarks to evaluate a used A-Class.

At 3 Years

22,000

miles

At 5 Years

38,000

miles

At 10 Years

72,000

miles

Other Mercedes-Benz Models

Compare MOT reliability across Mercedes-Benz models.

Mercedes-Benz C-Class

80.5% 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

Mercedes-Benz CLA-Class

83.8% 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 A-Class

Mercedes-Benz A-Class — Frequently Asked Questions

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

What is the MOT pass rate for the Mercedes-Benz A-Class?
The average MOT pass rate for the Mercedes-Benz A-Class is 82.8% 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 A-Class?
The most common MOT failures on the Mercedes-Benz A-Class are: Lamps, reflectors and electrical equipment (14.8%), Suspension (13.5%), Brakes (11.8%). These are the components most likely to cause an MOT failure.
Is the Mercedes-Benz A-Class reliable?
With an average MOT pass rate of 82.8%, the Mercedes-Benz A-Class 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 A-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 A-Class?
Typical mileage for the Mercedes-Benz A-Class: 22,000 miles at 3 years, 38,000 miles at 5 years, 72,000 miles at 10 years. Use these benchmarks when evaluating a used A-Class to spot vehicles with unusually high or low mileage.

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

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

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