2018 Mercedes-Benz SL prices

There are 8 used 2018 Mercedes-Benz SL cars for sale from UK dealers on AskCar, as of 9 November 2026. The cheapest is £33,490.

Dealers lowered the asking price on more than a third of 2018 Mercedes-Benz SL cars: 3 of the 8 in the 14 days to 9 November 2026.

AskCar lists 461 used Mercedes-Benz SL across the UK, from 341 dealerships.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 Mercedes-Benz SL cars for sale now

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. All 8 cars listed here meet these rules.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 370 priced Mercedes-Benz SL adverts on AskCar as of 9 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Mercedes-Benz SL.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.

Best value 2018 Mercedes-Benz SL: priced furthest below the AskCar estimate

Their asking prices run from £33,490 to £64,995.

Cheapest 2018 Mercedes-Benz SL: the lowest asking prices

These 8 are priced £33,490 to £64,995. They have covered 15,777 to 40,000 miles.

Lowest-mileage 2018 Mercedes-Benz SL

These 8 have covered 15,777 to 40,000 miles. Their asking prices run from £33,490 to £64,995.

Recently reduced 2018 Mercedes-Benz SL: the biggest price reductions in the 14 days to 9 November 2026

The dealer lowered the asking price on each of these 3 in the 14 days to 9 November 2026. Their reductions since AskCar first saw them run from £1,000.

Newly advertised 2018 Mercedes-Benz SL: first seen by AskCar in the 7 days to 9 November 2026

This car is the most recently advertised.

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