Skip to main content
GB
MOT
Checkup

Mercedes-Benz SLC Common Problems, Faults & Repair Costs (2026)

Based on official DVSA MOT test data. View the most common MOT failure categories, pass rates, and estimated repair costs for the Mercedes-Benz SLC (2016–2020).

MOT Pass Rate

82.5%0.5% above national avg (82%)

Reliability rating: Good — based on approx. 3,000 tests

Dangerous Defects

1.50%

Moderate risk

Retest Rate

12.0%

of failed tests need a retest

Top MOT Failure Categories

1

Lamps, reflectors and electrical equipment

Est. repair: £40–£200

14.0%
2

Suspension

Est. repair: £120–£450

12.8%
3

Brakes

Est. repair: £100–£350

11.0%
4

Tyres

Est. repair: £50–£120 per tyre

9.5%
5

Exhaust, fuel and emissions

Est. repair: £40–£200

7.2%

Where Faults Occur

30.0%

Front

27.0%

Rear

20.0%

Offside

Mileage Benchmarks

At 3 years

12,000 mi

At 5 years

20,000 mi

At 10 years

N/A

Significantly higher or lower mileage than these benchmarks may indicate unusual usage patterns. Check the full MOT history for mileage consistency.

Is a Mercedes-Benz SLC a Good Buy?

The Mercedes-Benz SLC demonstrates above-average reliability based on MOT test data, with a 82.5% pass rate. This places it 0.5% above the national average, suggesting lower ongoing maintenance costs compared to many competitors.

While no car is without faults, lamps, reflectors and electrical equipment issues are the most common concern, affecting approximately 14.0% of failed tests. These tend to be relatively affordable to fix at £30–£150.

Mercedes-Benz SLC MOT Check & History

View detailed MOT pass rates by year, mileage benchmarks, and full test history data for the Mercedes-Benz SLC.

View Mercedes-Benz SLC MOT Data

Check a Specific Mercedes-Benz SLC

Enter a registration number to view the full MOT history for any Mercedes-Benz SLC.

GB

Other Mercedes-Benz Models

Mercedes-Benz C-Class

80.5%

Lamps, reflectors and electrical equipment →

Mercedes-Benz A-Class

82.8%

Lamps, reflectors and electrical equipment →

Mercedes-Benz E-Class

79.2%

Lamps, reflectors and electrical equipment →

Mercedes-Benz GLA-Class

84.5%

Lamps, reflectors and electrical equipment →

Mercedes-Benz B-Class

79.8%

Lamps, reflectors and electrical equipment →

Mercedes-Benz GLC-Class

85.2%

Lamps, reflectors and electrical equipment →

View all Mercedes-Benz models

Frequently Asked Questions

What are the most common MOT faults on a Mercedes-Benz SLC?
The top MOT failure on the Mercedes-Benz SLC is Lamps, reflectors and electrical equipment, accounting for approximately 14.0% of all failures. Other common issues include suspension and brakes.
What is the Mercedes-Benz SLC MOT pass rate?
The Mercedes-Benz SLC has an estimated MOT pass rate of 82.5%, which is 0.5% above the national average of 82%. This rates the Mercedes-Benz SLC as "Good" for MOT reliability.
Is the Mercedes-Benz SLC reliable?
Based on DVSA MOT data, the Mercedes-Benz SLC has a good reliability record with a 82.5% pass rate. It has a dangerous defect rate of 1.50% and a retest rate of 12.0%.
How much does it cost to fix common Mercedes-Benz SLC MOT failures?
Typical repair costs for Mercedes-Benz SLC MOT failures range from £30–£200 for lamps, reflectors and electrical equipment issues to £120–£450 for suspension problems. Prices are estimates based on typical UK independent garage rates.
What mileage should a Mercedes-Benz SLC have?
Based on MOT test data, the average Mercedes-Benz SLC covers approximately 12,000 mi by 3 years, 20,000 mi by 5 years, and N/A by 10 years. Significantly higher or lower mileage may warrant closer inspection.
Should I buy a used Mercedes-Benz SLC?
The Mercedes-Benz SLC is generally a solid choice based on MOT data. Check the full MOT history of any specific vehicle before purchasing, paying particular attention to lamps, reflectors and electrical equipment issues and mileage consistency.
Mercedes-Benz SLC MOT DataAll Mercedes-Benz ModelsAll Makes