Mercedes Benz 350 MOT Check

MOT pass rates, common failures, and reliability data for the Mercedes Benz 350. Check any 350 by registration number below.

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85.1%

Avg Pass Rate

-5.1%

vs Mercedes Benz Avg

Year Ranges

Excellent

Reliability

Mercedes Benz 350 — MOT Reliability Overview

The Mercedes Benz 350 has an average MOT pass rate of 85.1%, which is 5.1 percentage points below the Mercedes Benz brand average of 90.2%. This is a strong result, indicating that the 350 is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

The most common reasons a Mercedes Benz 350 fails its MOT are a floor excessively deteriorated or insecure. If you are preparing your 350 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 350, 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 350 performs at MOT across different model years.

2016

Based on 53 vehicles

88.7%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

2.6%

Retest Rate

21.1%

2014

Based on 34 vehicles

88.2%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

4.8%

Mileage at 10yr

101k mi

2012

Based on 46 vehicles

84.8%Good

Mercedes Benz average: 90.2%

Dangerous Defects

0.0%

Retest Rate

9.7%

2011

Based on 54 vehicles

77.8%Good

Mercedes Benz average: 90.2%

Dangerous Defects

8.3%

Retest Rate

19.4%

2010

Based on 96 vehicles

81.3%Good

Mercedes Benz average: 90.2%

Dangerous Defects

1.4%

Retest Rate

31.0%

2009

Based on 33 vehicles

90.9%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

5.0%

Retest Rate

5.0%

2008

Based on 51 vehicles

96.1%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

2.2%

Retest Rate

2.2%

1980

Based on 54 vehicles

68.5%Average

Mercedes Benz average: 90.2%

Dangerous Defects

0.0%

Retest Rate

5.6%

1979

Based on 61 vehicles

86.9%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

2.7%

Retest Rate

13.5%

1973

Based on 31 vehicles

87.1%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

0.0%

1972

Based on 43 vehicles

86.0%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

0.0%

Retest Rate

6.5%

Top MOT Failures — Mercedes Benz 350

The most common reasons a Mercedes Benz 350 fails its MOT, aggregated across all year ranges.

A floor excessively deteriorated or insecure

21.3%

Mercedes Benz 350 Common Faults & Repair Costs

Where Failures Occur

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

Rear Nearside

3.8%

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 350

Mercedes Benz 350 — Frequently Asked Questions

Common questions about the Mercedes Benz 350 MOT and reliability.

What is the MOT pass rate for the Mercedes Benz 350?

The average MOT pass rate for the Mercedes Benz 350 is 85.1% 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 350?

The most common MOT failures on the Mercedes Benz 350 are: A floor excessively deteriorated or insecure (21.3%). These are the components most likely to cause an MOT failure.

Is the Mercedes Benz 350 reliable?

With an average MOT pass rate of 85.1%, the Mercedes Benz 350 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 350?

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 350?

Typical mileage for the Mercedes Benz 350: 101,064 miles at 10 years. Use these benchmarks when evaluating a used 350 to spot vehicles with unusually high or low mileage.

Check Your Mercedes Benz 350's MOT History

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