2021 Mercedes-Benz GLC 2.0 GLC300d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLC
• Trim: AMG Line Premium
• Version: 2.0 GLC300d AMG Line Premium G-Tronic+ 4WD Euro 6 (s/s) 5dr (242 bhp)
• Year: 2021
• Mileage: 32,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 242 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 172 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 32,000 miles, this 2021 Mercedes-Benz GLC AMG Line Premium has covered about 16,200 fewer miles than other 2021 Mercedes-Benz GLC cars. Priced at £28,750, it is advertised £695 above the AskCar estimate of £28,055. The AskCar estimate uses 2,814 UK dealer adverts for the Mercedes-Benz GLC, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 27 days ago. Its advertised mileage matches the government's MOT record. The seller is Castle Motors, based in Liskeard. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £695 (2%) over the AskCar estimate of £28,055.

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 2,814 priced Mercedes-Benz GLC adverts across different ages and specifications, as of 8 November 2026.

A 2021 Mercedes-Benz GLC with the 2.0 diesel engine is typically advertised at £24,800: the median of the 126 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 Mercedes-Benz GLC has been on sale for at least 27 days.

Price history

AskCar first saw this advert on 12 October 2026 at £28,750. 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 8 November 2026: valid until 14 March 2027.

It has had 3 MOTs. The latest, on 27 February 2026, passed.

Advisories at the latest test: engine , under body and outer sill covers fitted.

Mileage at that test: 26,599 miles, which matches the advertised 32,000 miles.

Advertised mileage is about 16,200 miles lower than the median mileage of a 2021 Mercedes-Benz GLC on AskCar.

Similar cars

31 other 2021 Mercedes-Benz GLC AMG Line Premium 2.0 diesel automatic SUVs are for sale at UK dealers, from £18,990 to £29,990, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, white. Mileage: 35,300 miles. Price: £28,995, £245 more than this car. Dealer: Stratstone Mercedes-Benz of Chelmsford in Chelmsford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-5c628e427f9b
• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, red. Mileage: 25,871 miles. Price: £26,998, £1,752 less than this car. Dealer: Arnold Clark Mercedes-Benz Of Perth in Perth. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-972d1ed032b8
• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, white. Mileage: 40,086 miles. Price: £25,399, £3,351 less than this car. Dealer: cinch in Blackburn. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-29815a1e2689

• The nearest: 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, grey, 94 miles from this car. Mileage: 75,325 miles. Price: £22,991, £5,759 less than this car. Dealer: Greenaway Autos in Pontypridd. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-0c69ab229a64