2018 Mercedes-Benz C Class 3.0 C43 V6 AMG

Overview

• Make: Mercedes-Benz
• Model: C Class
• Trim: AMG
• Version: 3.0 C43 V6 AMG G-Tronic+ 4WD Euro 6 (s/s) 2dr Cabriolet (362 bhp)
• Year: 2018
• Mileage: 74,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 362 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2018 Mercedes-Benz C Class AMG is 74,000 miles. Its asking price of £18,380 is £2,849 below the AskCar estimate of £21,229. To work out the AskCar estimate, we analyse UK dealer adverts for 4,643 Mercedes-Benz C Class cars across different ages and specifications. Since we first spotted the advert 160 days ago, the asking price has dropped by £1,615. The last MOT shows 75,185 miles, more than the advert. This is worth checking with the dealer. MOT records show an expiry date of 11 June 2027. It is advertised by Gillman Motors in Dartford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Good value: £2,849 (13%) under the AskCar estimate of £21,229.

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 4,643 priced Mercedes-Benz C Class adverts across different ages and specifications, as of 4 November 2026.

A 2018 Mercedes-Benz C Class with the 3.0 petrol engine is typically advertised at £22,900: the median of the 53 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 Mercedes-Benz C Class has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £19,995. Its asking price is now £18,380, £1,615 less. The latest price cut was seen on 29 July 2026.

Price changes recorded:

• 29 May 2026: £19,995
• 30 June 2026: £19,500
• 27 July 2026: £18,580
• 29 July 2026: £18,380

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 11 June 2027.

It has had 6 MOTs. The latest, on 12 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 75,185 miles. The advert says 74,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 8,100 miles higher than the median mileage of a 2018 Mercedes-Benz C Class on AskCar.