2020 Mercedes-Benz C Class 1.9 C300d AMG Line

Overview

• Make: Mercedes-Benz
• Model: C Class
• Trim: AMG Line
• Version: 1.9 C 300 d AMG Line 9G-Tronic Plus RWD Euro 6 2dr (06/2018 on) (241 bhp)
• Year: 2020
• Mileage: 27,361 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 1.9 litres, 241 bhp
• Gearbox: Automatic (9G-Tronic Plus)
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 153 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 27,361 miles on the clock, this 2020 Mercedes-Benz C Class AMG Line has done roughly 20,700 fewer miles than a typical 2020 Mercedes-Benz C Class. The AskCar estimate for this car is £21,625. It is priced at £21,999, which is £374 above that estimate. The AskCar estimate draws on 4,622 Mercedes-Benz C Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 38 days ago. Its asking price has since fallen by £500. The recorded MOT expired on 9 October 2026, so ask the dealer whether it has been renewed. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Fresh Motors in Thetford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £374 (1%) over the AskCar estimate of £21,625.

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 4,622 priced Mercedes-Benz C Class adverts across different ages and specifications, as of 7 November 2026.

A 2020 Mercedes-Benz C Class with the 1.9 diesel engine is typically advertised at £19,400: the median of the 10 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2020 Mercedes-Benz C Class has been on sale for at least 38 days.

Price history

AskCar first saw this advert on 30 September 2026 at £22,499. Its asking price is now £21,999, £500 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 30 September 2026: £22,499
• 7 November 2026: £21,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: the latest record we hold ran out on 9 October 2026; ask the dealer for the current MOT.

It has had 3 MOTs. The latest, on 7 October 2025, passed.

Advisories at the latest test: nearside rear tyre slightly damaged outer side wall.

Mileage at that test: 22,271 miles, which matches the advertised 27,361 miles.

Advertised mileage is about 20,700 miles lower than the median mileage of a 2020 Mercedes-Benz C Class on AskCar.

Similar cars

2 other 2020 Mercedes-Benz C Class AMG Line 1.9 diesel automatic convertibles are for sale at UK dealers, from £16,491 to £19,995, as of 7 November 2026.

The 2 closest to this car in mileage:

• 2020 Mercedes-Benz C Class AMG Line, 1.9 diesel convertible, blue. Mileage: 39,000 miles. Price: £19,995, £2,004 less than this car. Dealer: Southern Prestige Cars in Crawley. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2020-7510e255c9ce
• 2020 Mercedes-Benz C Class AMG Line, 1.9 diesel convertible, white. Mileage: 76,501 miles. Price: £16,491, £5,508 less than this car. Dealer: Stratstone Mercedes-Benz Of Leeds in Leeds. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2020-dc5ff20a7eda