Used Mercedes-Benz S Class for sale under £20,000

There are 233 used Mercedes-Benz S Class under £20,000 for sale from UK dealers on AskCar, as of 10 November 2026. Typical asking price £14,000 (the median: half cost less, half cost more). The cheapest is £1,500. AskCar lists 637 used Mercedes-Benz S Class across the UK, from 445 dealerships.

The middle half of the 233 cars are priced between £8,500 and £18,000.

As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

33 of the 233 cars had their price reduced in the last 14 days to 10 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
201634£17,500£16,000 to £18,300
201526£16,500£14,500 to £17,800
201425£14,000£12,700 to £17,000

Cars for sale now, page 1 of 3

Best value first: the cars priced furthest below their AskCar estimate come first, and those without one come after. The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 573 priced Mercedes-Benz S Class adverts on AskCar as of 10 November 2026.

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.

Cheaper cars like each one, with its price history, are on its AskCar page.

Mercedes-Benz S Class by gearbox, fuel and body

Mercedes-Benz S Class under £20,000 by gearbox, fuel and body

Mercedes-Benz S Class prices by year

Mercedes-Benz S Class by price

Mercedes-Benz S Class near you

More Mercedes-Benz

Same budget

Everything