2018 Mercedes-Benz C Class 2.1 C250d AMG Line Premium Plus

Overview

• Make: Mercedes-Benz
• Model: C Class
• Trim: AMG Line Premium Plus
• Version: 2.1 C250d AMG Line Premium Plus G-Tronic+ RWD Euro 6 (s/s) 2dr Cabriolet (201 bhp)
• Year: 2018
• Mileage: 40,403 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.1 litres, 201 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 126 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mercedes-Benz C Class AMG Line Premium Plus has covered 40,403 miles, around 25,500 fewer miles than is typical for its age. The dealer is asking £17,990, which is £517 below the AskCar estimate of £18,507. To work out the AskCar estimate, we analyse UK dealer adverts for 4,643 Mercedes-Benz C Class cars across different ages and specifications. This car was first seen in our listings data 48 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Car City UK Catterick in Catterick Garrison. 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

Fair price: £517 (2%) under the AskCar estimate of £18,507.

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 2.1 diesel engine is typically advertised at £14,000: the median of the 206 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 48 days.

Price history

AskCar first saw this advert on 17 September 2026 at £17,990. Its asking price has not changed.

Price changes recorded:

• 17 September 2026: £17,990
• 22 September 2026: £18,156
• 20 October 2026: £17,990

Mileage and MOT

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

It failed its MOT on 23 January 2026 (engine MIL inoperative or indicates a malfunction; nearside front windscreen washer not working; offside front windscreen washer not working; and 1 more) and passed 4 days later, on 27 January 2026.

There were no advisories at the latest test.

Mileage at that test: 38,440 miles, which matches the advertised 40,403 miles.

Advertised mileage is about 25,500 miles lower than the median mileage of a 2018 Mercedes-Benz C Class on AskCar.

Similar cars

12 other 2018 Mercedes-Benz C Class AMG Line Premium Plus 2.1 diesel automatic convertibles are for sale at UK dealers, from £13,400 to £18,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Mercedes-Benz C Class AMG Line Premium Plus, 2.1 diesel convertible, grey. Mileage: 39,000 miles. Price: £17,995, the same price as this car. Dealer: S J Peters in Sudbury. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-15186aa09df0
• 2018 Mercedes-Benz C Class AMG Line Premium Plus, 2.1 diesel convertible, silver. Mileage: 43,268 miles. Price: £18,995, £1,005 more than this car. Dealer: Stoneacre Rotherham Select in Brinsworth. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-a36917e528a8
• 2018 Mercedes-Benz C Class AMG Line Premium Plus, 2.1 diesel convertible, white. Mileage: 43,948 miles. Price: £16,850, £1,140 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-e313070ec2a4

• The nearest: 2018 Mercedes-Benz C Class AMG Line Premium Plus, 2.1 diesel convertible, grey, 45 miles from this car. Mileage: 78,038 miles. Price: £13,551, £4,439 less than this car. Dealer: JCT600 Approved South Leeds in Batley. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2018-9cbce66fd2a7