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

There are 231 used Mercedes-Benz C Class convertible under £20,000 for sale from UK dealers on AskCar, as of 29 October 2026. Typical asking price £16,000 (the median: half cost less, half cost more). The cheapest is £10,000. AskCar lists 4,876 used Mercedes-Benz C Class across the UK, from 2,356 dealerships.

The middle half of the 231 cars are priced between £14,000 and £17,500.

As of 29 October 2026, AskCar lists 587,923 cars and vans from 12,992 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

81 of the 231 cars had their price reduced in the last 14 days to 29 October 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
201958£17,000£16,000 to £18,500
201859£16,000£14,700 to £17,800
201783£14,500£12,900 to £15,600

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 4,525 priced Mercedes-Benz C Class adverts on AskCar as of 29 October 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 C Class by gearbox, fuel and body

Mercedes-Benz C Class convertible by price

Mercedes-Benz C Class prices by year

Mercedes-Benz C Class by price

Mercedes-Benz C Class near you

Convertible cars under £20,000

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