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

There are 1,014 used petrol Mercedes-Benz C Class under £20,000 for sale from UK dealers on AskCar, as of 30 October 2026. Typical asking price £13,400 (the median: half cost less, half cost more). The cheapest is £690. AskCar lists 4,734 used Mercedes-Benz C Class across the UK, from 2,267 dealerships.

The middle half of the 1,014 cars are priced between £9,000 and £16,400.

As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

263 of the 1,014 cars had their price reduced in the last 14 days to 30 October 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
202048£16,000£14,300 to £17,800
2019218£15,300£13,400 to £17,000
2018160£14,500£12,800 to £16,700
2017132£13,800£11,500 to £16,000
201683£13,500£11,900 to £16,000
201576£10,500£8,700 to £12,000
201429£9,800£7,500 to £11,200
201338£7,000£5,400 to £17,000
201241£5,600£4,600 to £8,000
201123£6,000£4,600 to £8,700
201028£4,600£3,500 to £6,200
200925£4,000£2,700 to £6,000

Cars for sale now, page 8 of 11

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 4,537 priced Mercedes-Benz C Class adverts on AskCar as of 30 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

Petrol Mercedes-Benz C Class by price

Mercedes-Benz C Class prices by year

Mercedes-Benz C Class by price

Mercedes-Benz C Class near you

Petrol cars under £20,000

More Mercedes-Benz

Same budget

Everything