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Mercedes Benz Sl 400 Grand Edition Auto MOT Check

MOT pass rates, common failures, and reliability data for the Mercedes Benz Sl 400 Grand Edition Auto. Check any Sl 400 Grand Edition Auto by registration number below.

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92.3%

Avg Pass Rate

+2.1%

vs Mercedes Benz Avg

3

Year Ranges

Excellent

Reliability

Mercedes Benz Sl 400 Grand Edition Auto — MOT Reliability Overview

The Mercedes Benz Sl 400 Grand Edition Auto has an average MOT pass rate of 92.3%, which is 2.1 percentage points above the Mercedes Benz brand average of 90.2%. This is a strong result, indicating that the Sl 400 Grand Edition Auto is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

Before buying a used Mercedes Benz Sl 400 Grand Edition Auto, 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 Sl 400 Grand Edition Auto performs at MOT across different model years.

2021

Based on 31 vehicles

83.9%Good
Mercedes Benz average: 90.2%
Dangerous Defects

6.9%

Retest Rate

17.2%

Mileage at 3yr

27k mi

2020

Based on 155 vehicles

95.5%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

0.9%

Retest Rate

4.6%

Mileage at 3yr

19k mi

2019

Based on 39 vehicles

97.4%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

0.0%

Mileage at 5yr

17k mi

Where Failures Occur

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

Rear Offside

6.5%

Rear Nearside

6.5%

Front Nearside Inner

3.2%

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 Sl 400 Grand Edition Auto

Mercedes Benz Sl 400 Grand Edition Auto — Frequently Asked Questions

Common questions about the Mercedes Benz Sl 400 Grand Edition Auto MOT and reliability.

What is the MOT pass rate for the Mercedes Benz Sl 400 Grand Edition Auto?
The average MOT pass rate for the Mercedes Benz Sl 400 Grand Edition Auto is 92.3% 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 Sl 400 Grand Edition Auto?
Check the detailed breakdown on this page for specific failure data by year range.
Is the Mercedes Benz Sl 400 Grand Edition Auto reliable?
With an average MOT pass rate of 92.3%, the Mercedes Benz Sl 400 Grand Edition Auto 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 Sl 400 Grand Edition Auto?
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 Sl 400 Grand Edition Auto?
Typical mileage for the Mercedes Benz Sl 400 Grand Edition Auto: 27,390 miles at 3 years. Use these benchmarks when evaluating a used Sl 400 Grand Edition Auto to spot vehicles with unusually high or low mileage.

Check Your Mercedes Benz Sl 400 Grand Edition Auto's MOT History

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

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