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Mercedes Benz Sl 400 Grand Edition Premium A MOT Check

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

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97.7%

Avg Pass Rate

+7.5%

vs Mercedes Benz Avg

3

Year Ranges

Excellent

Reliability

Mercedes Benz Sl 400 Grand Edition Premium A — MOT Reliability Overview

The Mercedes Benz Sl 400 Grand Edition Premium A has an average MOT pass rate of 97.7%, which is 7.5 percentage points above the Mercedes Benz brand average of 90.2%. This is a strong result, indicating that the Sl 400 Grand Edition Premium A is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

The most common reasons a Mercedes Benz Sl 400 Grand Edition Premium A fails its MOT are tyre tread depth not in accordance with the requirements. If you are preparing your Sl 400 Grand Edition Premium A 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 Sl 400 Grand Edition Premium A, 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 Premium A performs at MOT across different model years.

2021

Based on 44 vehicles

100.0%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

0.0%

Mileage at 3yr

21k mi

2020

Based on 367 vehicles

96.2%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

2.4%

Retest Rate

3.6%

Mileage at 3yr

21k mi

Mileage at 5yr

47k mi

2019

Based on 230 vehicles

97.0%Excellent
Mercedes Benz average: 90.2%
Dangerous Defects

1.6%

Retest Rate

2.1%

Mileage at 3yr

16k mi

Mileage at 5yr

35k mi

Top MOT Failures — Mercedes Benz Sl 400 Grand Edition Premium A

The most common reasons a Mercedes Benz Sl 400 Grand Edition Premium A fails its MOT, aggregated across all year ranges.

1

Tyre tread depth not in accordance with the requirements

3.3%
Mercedes Benz Sl 400 Grand Edition Premium A Common Faults & Repair Costs

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 Premium A

Mercedes Benz Sl 400 Grand Edition Premium A — Frequently Asked Questions

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

What is the MOT pass rate for the Mercedes Benz Sl 400 Grand Edition Premium A?
The average MOT pass rate for the Mercedes Benz Sl 400 Grand Edition Premium A is 97.7% 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 Premium A?
The most common MOT failures on the Mercedes Benz Sl 400 Grand Edition Premium A are: Tyre tread depth not in accordance with the requirements (3.3%). These are the components most likely to cause an MOT failure.
Is the Mercedes Benz Sl 400 Grand Edition Premium A reliable?
With an average MOT pass rate of 97.7%, the Mercedes Benz Sl 400 Grand Edition Premium A 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 Premium A?
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 Premium A?
Typical mileage for the Mercedes Benz Sl 400 Grand Edition Premium A: 21,228 miles at 3 years. Use these benchmarks when evaluating a used Sl 400 Grand Edition Premium A to spot vehicles with unusually high or low mileage.

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

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

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