2021 Mercedes-Benz GLC 2.0 GLC300d AMG Line Premium Plus

Overview

• Make: Mercedes-Benz
• Model: GLC
• Trim: AMG Line Premium Plus
• Version: 2.0 GLC300d AMG Line Premium Plus G-Tronic+ 4WD Euro 6 (s/s) 5dr (242 bhp)
• Year: 2021
• Mileage: 79,750 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: 174 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLC AMG Line Premium Plus is advertised with 79,750 miles, approximately 31,600 above the typical mileage for its age. The dealer is asking £21,950, which is £315 above the AskCar estimate of £21,635. To work out the AskCar estimate, we analyse UK dealer adverts for 2,850 Mercedes-Benz GLC cars across different ages and specifications. We first saw this car advertised 20 days ago. Its asking price has since fallen by £845. The seller is Specialist Carz, based in Ruislip. 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: £315 (1%) over the AskCar estimate of £21,635.

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 2,850 priced Mercedes-Benz GLC adverts across different ages and specifications, as of 7 November 2026.

A 2021 Mercedes-Benz GLC with the 2.0 diesel engine is typically advertised at £24,800: the median of the 127 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Mercedes-Benz GLC has been on sale for at least 20 days.

Price history

AskCar first saw this advert on 18 October 2026 at £22,795. Its asking price is now £21,950, £845 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 18 October 2026: £22,795
• 20 October 2026: £22,450
• 30 October 2026: £22,395
• 1 November 2026: £21,950

Mileage and MOT

Advertised mileage is about 31,600 miles higher than the median mileage of a 2021 Mercedes-Benz GLC on AskCar.

Similar cars

13 other 2021 Mercedes-Benz GLC AMG Line Premium Plus 2.0 diesel automatic SUVs are for sale at UK dealers, from £22,495 to £41,991, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, grey. Mileage: 66,000 miles. Price: £26,990, £5,040 more than this car. Dealer: Your Car Group in Newport. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-5a08fb0811ec
• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, black. Mileage: 62,500 miles. Price: £24,495, £2,545 more than this car. Dealer: Hitchfields in Huddersfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-b838d2ee4794
• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, white. Mileage: 57,300 miles. Price: £24,990, £3,040 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-f12e8a449640

• The nearest: 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, silver, 7 miles from this car. Mileage: 54,763 miles. Price: £24,750, £2,800 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-4fefdc35b2c9