Used car guide

2013 Mercedes-Benz SL: common problems and what to check

What gets flagged at MOT on 2013 Mercedes-Benz SLs, from 1,149 tests in 2025, plus known faults and what to look at before you buy one.

1,149MOT tests in 2025
81%pass first time (all 2013 cars: 66%)
4,000typical miles a year
22%had tyres flagged

What gets flagged at MOT

The share of 2013 Mercedes-Benz SL MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    22% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Brakes
    14% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Suspension
    11% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Lights and electrics
    9% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Wipers, windscreen and mirrors
    4% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

  • Oil and fluid leaks
    2% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

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Other years

YearMOT testsMost flagged
2017640Tyres 23%
2016766Tyres 21%
2015783Tyres 22%
20141,074Tyres 23%
2008743Brakes 23%
2007771Brakes 23%
2006778Brakes 25%
20051,079Brakes 24%
20041,742Brakes 24%
20032,242Brakes 25%
2002912Brakes 26%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2013 Mercedes-Benz SLs registered in 2013. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score