2018 Mercedes-Benz C Class prices

There are 558 used 2018 Mercedes-Benz C Class cars for sale from UK dealers on AskCar, as of 2 November 2026. Typical asking price £15,000 (the median: half cost less, half cost more). The cheapest is £5,995. The middle half are priced between £12,500 and £17,800. Median mileage: about 65,000 miles.

Dealers lowered the asking price on more than a quarter of 2018 Mercedes-Benz C Class cars: 157 of the 558 in the 14 days to 2 November 2026.

2018 Mercedes-Benz C Class prices by engine and mileage

A 2018 Mercedes-Benz C Class 2.1 diesel car typically costs £14,000, against £14,000 for the 2.0 petrol, as of 2 November 2026.

A 2018 Mercedes-Benz C Class 2.1 diesel car with 20,000 to 40,000 miles typically costs £17,600, against £13,000 with 60,000 miles or more.

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
2.1 diesel£14,000Too few for sale£17,600£16,000£13,000
2.0 petrol£14,000Too few for saleToo few for sale£16,000£13,000
1.5 petrol£14,500Too few for saleToo few for sale£15,400£13,000
3.0 petrol£23,000Too few for saleToo few for sale£24,000£21,500
4.0 petrol£33,500Too few for saleToo few for saleToo few for saleToo few for sale

Only 14 of the 2018 Mercedes-Benz C Class cars for sale have the 1.6 diesel engine, too few to give a typical asking price.

2018 Mercedes-Benz C Class prices by trim

TrimTypical asking price, 2018 cars
AMG Line£14,000
AMG Line Premium Plus£16,000
AMG Line Premium£14,500
Sport£11,000
Sport Premium£13,200
SE£11,000
AMG Premium£28,000
AMG Premium Plus£25,000
Premium PlusToo few for sale
AMGToo few for sale
SE Executive EditionToo few for sale
Sport Premium PlusToo few for sale
AMG S PremiumToo few for sale
PremiumToo few for sale

Only 12 of the 2018 Mercedes-Benz C Class cars for sale are Premium Plus, too few to give a typical asking price.

Only 12 of the 2018 Mercedes-Benz C Class cars for sale are AMG, too few to give a typical asking price.

Only 12 of the 2018 Mercedes-Benz C Class cars for sale are SE Executive Edition, too few to give a typical asking price.

Only 11 of the 2018 Mercedes-Benz C Class cars for sale are Sport Premium Plus, too few to give a typical asking price.

Only 8 of the 2018 Mercedes-Benz C Class cars for sale are AMG S Premium, too few to give a typical asking price.

Only 3 of the 2018 Mercedes-Benz C Class cars for sale are Premium, too few to give a typical asking price.

Typical asking prices are of 2018 Mercedes-Benz C Class cars for sale on 2 November 2026, and are given only where at least 20 cars with a price are for sale.

2018 Mercedes-Benz C Class against other years

A 2017 Mercedes-Benz C Class car has a typical asking price of £13,500 and a 2019 one £16,000, as of 2 November 2026.

AskCar lists 4,836 used Mercedes-Benz C Class across the UK, from 2,331 dealerships.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 Mercedes-Benz C Class cars for sale now, page 1 of 11

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. 491 of the 510 cars listed here meet these rules. Pages 2 to 11 list every other 2018 Mercedes-Benz C Class car, cheapest first, including the 19 the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 4,618 priced Mercedes-Benz C Class adverts on AskCar as of 2 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Mercedes-Benz C Class.

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.

This list leaves out 48 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

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

These 10 are priced 14% to 23% under their AskCar estimate. Their asking prices run from £7,995 to £11,888.

Cheapest 2018 Mercedes-Benz C Class: the lowest asking prices

These 10 are priced £6,995 to £8,500. They have covered 70,946 to 129,000 miles.

Lowest-mileage 2018 Mercedes-Benz C Class

These 10 have covered 10,984 to 24,260 miles. Their asking prices run from £15,299 to £41,995.

Recently reduced 2018 Mercedes-Benz C Class: the biggest price reductions in the 14 days to 2 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 2 November 2026. Their reductions since AskCar first saw them run from £2,200 to £4,900.

Newly advertised 2018 Mercedes-Benz C Class: first seen by AskCar in the 7 days to 2 November 2026

These 10 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

Mercedes-Benz C Class by gearbox, fuel and body

Mercedes-Benz C Class prices by year

Mercedes-Benz C Class by trim

2018 Mercedes-Benz C Class by price

2018 Mercedes-Benz C Class by trim

Mercedes-Benz C Class by price

Mercedes-Benz C Class near you

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