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Mercedes Benz 312 MOT Check

MOT pass rates, common failures, and reliability data for the Mercedes Benz 312. Check any 312 by registration number below.

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68.5%

Avg Pass Rate

-21.7%

vs Mercedes Benz Avg

4

Year Ranges

Average

Reliability

Mercedes Benz 312 — MOT Reliability Overview

The Mercedes Benz 312 has an average MOT pass rate of 68.5%, which is 21.7 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 312 on the road.

The most common reasons a Mercedes Benz 312 fails its MOT are steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc, vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced. If you are preparing your 312 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 312, 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 312 performs at MOT across different model years.

1999

Based on 48 vehicles

75.0%Good
Mercedes Benz average: 90.2%
Dangerous Defects

3.0%

Retest Rate

30.3%

1998

Based on 88 vehicles

65.9%Average
Mercedes Benz average: 90.2%
Dangerous Defects

4.5%

Retest Rate

24.2%

1997

Based on 89 vehicles

59.6%Below Average
Mercedes Benz average: 90.2%
Dangerous Defects

4.2%

Retest Rate

25.4%

1996

Based on 120 vehicles

73.3%Average
Mercedes Benz average: 90.2%
Dangerous Defects

3.9%

Retest Rate

19.7%

Top MOT Failures — Mercedes Benz 312

The most common reasons a Mercedes Benz 312 fails its MOT, aggregated across all year ranges.

1

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

11.2%
2

Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced

11.2%
Mercedes Benz 312 Common Faults & Repair Costs

Where Failures Occur

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

Front Offside

18.8%

Front Nearside

10.4%

Nearside

10.4%

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 312

Mercedes Benz 312 — Frequently Asked Questions

Common questions about the Mercedes Benz 312 MOT and reliability.

What is the MOT pass rate for the Mercedes Benz 312?
The average MOT pass rate for the Mercedes Benz 312 is 68.5% 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 312?
The most common MOT failures on the Mercedes Benz 312 are: Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc (11.2%), Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced (11.2%). These are the components most likely to cause an MOT failure.
Is the Mercedes Benz 312 reliable?
With an average MOT pass rate of 68.5%, the Mercedes Benz 312 is rated as "Average" for reliability. This is around average — regular maintenance is recommended to avoid common failure points.
How do I check the MOT history of a Mercedes Benz 312?
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 312?
Mileage data for the Mercedes Benz 312 is available in the detailed breakdown on this page.

Check Your Mercedes Benz 312's MOT History

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

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