2020 Mercedes-Benz C Class 2.0 C300d AMG Line

Overview

• Make: Mercedes-Benz
• Model: C Class
• Trim: AMG Line
• Version: 2.0 C300d AMG Line G-Tronic+ RWD Euro 6 (s/s) 2dr (242 bhp)
• Year: 2020
• Mileage: 48,459 miles
• Fuel: Diesel
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 242 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Silver
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz C Class AMG Line has covered 48,459 miles. The dealer is asking £18,990, which is £363 above the AskCar estimate of £18,627. To work out the AskCar estimate, we analyse UK dealer adverts for 4,622 Mercedes-Benz C Class cars across different ages and specifications. We first recorded this car for sale 30 days ago. Its advertised mileage matches the government's MOT record. The seller is Spa Motors Mid Wales, based in Brecon. 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: £363 (1%) over the AskCar estimate of £18,627.

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 2.0 diesel engine is typically advertised at £17,700: the median of the 130 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 30 days.

Price history

AskCar first saw this advert on 8 October 2026 at £18,990. 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 7 November 2026: valid until 6 February 2027.

It has had 5 MOTs. The latest, on 30 January 2026, passed.

Advisories at the latest test: rear brake pad(s) wearing thin 2mm; engine covers and under trays on the vehicle.

Mileage at that test: 40,532 miles, which matches the advertised 48,459 miles.

Advertised mileage is about 400 miles higher than the median mileage of a 2020 Mercedes-Benz C Class on AskCar.

Similar cars

8 other 2020 Mercedes-Benz C Class AMG Line 2.0 diesel automatic coupes are for sale at UK dealers, from £14,990 to £21,500, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz C Class AMG Line, 2.0 diesel coupe, black. Mileage: 42,500 miles. Price: £18,995, the same price as this car. Dealer: Derwent Motors in Derby. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2020-bb3b0aead752
• 2020 Mercedes-Benz C Class AMG Line, 2.0 diesel coupe, black. Mileage: 57,000 miles. Price: £16,849, £2,141 less than this car. Dealer: Keith Price Garages in Abergavenny. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2020-31d13e0f4fa1
• 2020 Mercedes-Benz C Class AMG Line, 2.0 diesel coupe, white. Mileage: 30,737 miles. Price: £17,997, £993 less than this car. Dealer: Endeavour Omoda & Jaecoo Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-c-class-2020-1f0a10889711