2018 Mercedes-Benz C Class 2.0 C300 AMG Line

Overview

• Make: Mercedes-Benz
• Model: C Class
• Trim: AMG Line
• Version: 2.0 C300 AMG Line G-Tronic+ RWD Euro 6 (s/s) 2dr Cabriolet (242 bhp)
• Year: 2018
• Mileage: 83,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 242 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 161 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 83,000 miles, this 2018 Mercedes-Benz C Class AMG Line has covered about 17,400 more miles than other 2018 Mercedes-Benz C Class cars. Priced at £14,799, it is advertised £581 above the AskCar estimate of £14,218. The AskCar estimate uses UK dealer asking prices, including 4,618 Mercedes-Benz C Class adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert today. Its advertised mileage matches the government's MOT record. It is advertised by AB Car Sales in Gunnislake. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 11 November 2026.

How we estimate prices and check cars

Price

Fair price: £581 (4%) over the AskCar estimate of £14,218.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 4,618 priced Mercedes-Benz C Class adverts across different ages and specifications, as of 11 November 2026.

A 2018 Mercedes-Benz C Class with the 2.0 petrol engine is typically advertised at £14,000: the median of the 168 for sale on AskCar, as of 11 November 2026.

Time on sale

AskCar first saw this 2018 Mercedes-Benz C Class advertised today. About half of 2018 Mercedes-Benz C Class cars are gone from sale within a month of being advertised: 352 of the 747 first advertised between 11 July 2026 and 8 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £14,799. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 11 November 2026: valid until 28 March 2027.

It failed its MOT on 20 March 2026 (offside rear tyre has ply or cords exposed inner shoulder) and passed 3 days later, on 23 March 2026.

There were no advisories at the latest test.

Mileage at that test: 77,719 miles, which matches the advertised 83,000 miles.

Advertised mileage is about 17,400 miles higher than the median mileage of a 2018 Mercedes-Benz C Class on AskCar.

Similar cars

4 other 2018 Mercedes-Benz C Class AMG Line 2.0 petrol automatic convertibles are for sale at UK dealers, from £12,595 to £16,360, as of 11 November 2026.

The 3 closest to this car in mileage:

• 2018 Mercedes-Benz C Class AMG Line, 2.0 petrol convertible, black. Mileage: 92,000 miles. Price: £13,509, £1,290 less than this car. Dealer: FM Motor Co in Wembley. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-5cffecc0c56a
• 2018 Mercedes-Benz C Class AMG Line, 2.0 petrol convertible, white. Mileage: 99,897 miles. Price: £12,595, £2,204 less than this car. Dealer: Somerset Motor Company in Weston-super-Mare. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-907595e7d540
• 2018 Mercedes-Benz C Class AMG Line, 2.0 petrol convertible, white. Mileage: 57,079 miles. Price: £15,550, £751 more than this car. Dealer: Eddie Wright Car Supermarket in Scunthorpe. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-f458a4309aab