Mercedes Benz SLK MOT Check

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

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77.3%

Avg Pass Rate

-12.9%

vs Mercedes Benz Avg

Year Ranges

Good

Reliability

Mercedes Benz SLK — MOT Reliability Overview

The Mercedes Benz SLK has an average MOT pass rate of 77.3%, which is 12.9 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 SLK on the road.

The most common reasons a Mercedes Benz SLK fails its MOT are stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, a spring or spring component fractured or seriously weakened. If you are preparing your SLK 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 SLK, 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 SLK performs at MOT across different model years.

2016

Based on 3,519 vehicles

87.9%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

3.5%

Retest Rate

13.8%

2015

Based on 14,290 vehicles

85.4%Excellent

Mercedes Benz average: 90.2%

Dangerous Defects

3.7%

Retest Rate

16.7%

Mileage at 10yr

88k mi

2014

Based on 14,376 vehicles

83.8%Good

Mercedes Benz average: 90.2%

Dangerous Defects

3.5%

Retest Rate

18.8%

Mileage at 10yr

87k mi

2013

Based on 13,579 vehicles

80.6%Good

Mercedes Benz average: 90.2%

Dangerous Defects

4.3%

Retest Rate

23.7%

Mileage at 10yr

93k mi

2012

Based on 16,487 vehicles

80.6%Good

Mercedes Benz average: 90.2%

Dangerous Defects

3.6%

Retest Rate

22.0%

Mileage at 10yr

96k mi

2011

Based on 7,212 vehicles

81.2%Good

Mercedes Benz average: 90.2%

Dangerous Defects

3.6%

Retest Rate

20.9%

2010

Based on 5,649 vehicles

75.1%Good

Mercedes Benz average: 90.2%

Dangerous Defects

3.6%

Retest Rate

25.4%

2009

Based on 6,796 vehicles

74.6%Average

Mercedes Benz average: 90.2%

Dangerous Defects

3.9%

Retest Rate

24.2%

2008

Based on 8,755 vehicles

74.5%Average

Mercedes Benz average: 90.2%

Dangerous Defects

3.7%

Retest Rate

24.3%

2007

Based on 9,672 vehicles

73.2%Average

Mercedes Benz average: 90.2%

Dangerous Defects

3.9%

Retest Rate

24.9%

2006

Based on 10,139 vehicles

73.9%Average

Mercedes Benz average: 90.2%

Dangerous Defects

4.3%

Retest Rate

23.5%

2005

Based on 13,259 vehicles

72.8%Average

Mercedes Benz average: 90.2%

Dangerous Defects

3.6%

Retest Rate

23.7%

2004

Based on 8,526 vehicles

71.9%Average

Mercedes Benz average: 90.2%

Dangerous Defects

4.0%

Retest Rate

23.4%

2003

Based on 4,600 vehicles

74.2%Average

Mercedes Benz average: 90.2%

Dangerous Defects

4.4%

Retest Rate

21.6%

2002

Based on 5,145 vehicles

78.6%Good

Mercedes Benz average: 90.2%

Dangerous Defects

3.8%

Retest Rate

19.4%

2001

Based on 5,787 vehicles

78.3%Good

Mercedes Benz average: 90.2%

Dangerous Defects

3.7%

Retest Rate

16.5%

2000

Based on 4,960 vehicles

76.3%Good

Mercedes Benz average: 90.2%

Dangerous Defects

4.0%

Retest Rate

20.3%

1999

Based on 5,173 vehicles

75.8%Good

Mercedes Benz average: 90.2%

Dangerous Defects

2.1%

Retest Rate

19.4%

1998

Based on 4,038 vehicles

75.1%Good

Mercedes Benz average: 90.2%

Dangerous Defects

2.4%

Retest Rate

21.8%

1997

Based on 2,628 vehicles

77.4%Good

Mercedes Benz average: 90.2%

Dangerous Defects

1.8%

Retest Rate

18.7%

1996

Based on 145 vehicles

71.7%Average

Mercedes Benz average: 90.2%

Dangerous Defects

1.0%

Retest Rate

24.8%

Top MOT Failures — Mercedes Benz SLK

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

Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

3.1%

A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

2.8%

A spring or spring component fractured or seriously weakened

2.8%

A suspension component excessively damaged or corroded

2.0%

The aim of a headlamp is not within limits laid down in the requirements

2.0%

Mercedes Benz SLK Common Faults & Repair Costs

Where Failures Occur

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

Front Nearside

1.7%

Rear Nearside

1.6%

Front Offside

1.5%

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 SLK

Mercedes Benz SLK — Frequently Asked Questions

Common questions about the Mercedes Benz SLK MOT and reliability.

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

The average MOT pass rate for the Mercedes Benz SLK is 77.3% 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 SLK?

The most common MOT failures on the Mercedes Benz SLK are: Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning (3.1%), A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning (2.8%), A spring or spring component fractured or seriously weakened (2.8%). These are the components most likely to cause an MOT failure.

Is the Mercedes Benz SLK reliable?

With an average MOT pass rate of 77.3%, the Mercedes Benz SLK 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 SLK?

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 SLK?

Typical mileage for the Mercedes Benz SLK: 87,908 miles at 10 years. Use these benchmarks when evaluating a used SLK to spot vehicles with unusually high or low mileage.

Check Your Mercedes Benz SLK's MOT History

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