Mercedes-Benz Slc: MOT pass rate and reliability data

The Mercedes-Benz Slc passes its MOT first time more often than the average UK car, by 10.5 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 8,336 individual Mercedes-Benz Slc tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate87.2%
UK national average76.7%
Difference+10.5 points
Tests analysed8,336
Average mileage at test33,359 miles
Average year of manufacture2017
Reliability rank1,082 of 2,005 models

What this means if you are buying one

A 87.2% first-time pass rate means roughly 13 in every 100 Mercedes-Benz Slcs presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Mercedes-Benz Slc tested had covered 33,359 miles and was built around 2017.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. On a Mercedes-Benz Slc bought as a repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Mercedes-Benz Slc rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see what damaged Mercedes-Benz Slcs actually sold for at UK salvage auction.

Most common MOT failures on a Mercedes-Benz Slc

  1. Any fracture or welding defect on a wheel, 0.3% of tests (6.03x the national rate for this defect)
  2. A tyre cords visible or damaged, 2.1% of tests (1.7x the national rate for this defect)
  3. ESC MIL indicates a system malfunction, 0.2% of tests (1.67x the national rate for this defect)
  4. Number plate does not conform to the specified requirements, 0.2% of tests (1.44x the national rate for this defect)
  5. Warning device shows system malfunction, 0.4% of tests (1.42x the national rate for this defect)
  6. A tyre seriously damaged, 2.2% of tests
  7. Tyre tread depth not in accordance with the requirements, 1.1% of tests
  8. A spring or spring component fractured or seriously weakened, 1% of tests
  9. A suspension pin, bush or joint excessively worn, 0.8% of tests
  10. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 0.7% of tests

From 16,671 DVSA-tracked Mercedes-Benz Slc tests, 2024. DVSA testers marked 7.94% of these flagged Mercedes-Benz Slc defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 4.97% nationally.

Mercedes-Benz Slc pass rate by model year

Pass rates fall steadily as cars age, so the model year matters as much as the model. First-time pass rate for each Mercedes-Benz Slc year:

Mercedes-Benz Slc by fuel type

Diesel and petrol versions of the same car fail on different things, so the fuel type moves the number:

Other Mercedes-Benz models

Models with a similar pass rate

If this car is a salvage or write-off

Embed this data

Run a site about the Mercedes-Benz Slc? Embed the real DVSA pass-rate badge free, linked back to this page.

Mercedes-Benz Slc MOT pass rate badge: 87.2%

<a href="https://www.salvageprophet.co.uk/mot/mercedes-benz-slc"><img src="https://www.salvageprophet.co.uk/badge/mercedes-benz-slc.svg" width="340" height="92" alt="Mercedes-Benz Slc MOT Pass Rate: 87.2% - Salvage Prophet"></a>

All 2,005 models ranked by MOT pass rate