2021 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 9G-Tronic RWD Euro 6 5dr (261 bhp)
• Year: 2021
• Mileage: 20,467 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 261 bhp
• Gearbox: Automatic (9G-Tronic)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 136 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz C Class AMG Line has covered 20,467 miles, around 25,000 fewer miles than is typical for its age. The AskCar estimate for this car is £24,700. It is priced at £26,399, which is £1,699 above that estimate. The AskCar estimate draws on 4,524 Mercedes-Benz C Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 16 days ago. Its asking price has since fallen by £400. The government's MOT record matches its advertised mileage. It is advertised by cinch in Newbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,699 (6%) over the AskCar estimate of £24,700.

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 4,524 priced Mercedes-Benz C Class adverts across different ages and specifications, as of 9 November 2026.

A 2021 Mercedes-Benz C Class with the 2.0 diesel engine is typically advertised at £19,000: the median of the 69 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2021 Mercedes-Benz C Class has been on sale for at least 16 days.

Price history

AskCar first saw this advert on 24 October 2026 at £26,799. Its asking price is now £26,399, £400 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 24 October 2026: £26,799
• 28 October 2026: £26,699
• 30 October 2026: £26,599
• 6 November 2026: £26,399

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 18 June 2027.

It has had 3 MOTs. The latest, on 19 June 2026, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge; nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 18,662 miles, which matches the advertised 20,467 miles.

Advertised mileage is about 25,000 miles lower than the median mileage of a 2021 Mercedes-Benz C Class on AskCar.