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: 66,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 242 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 174 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 66,000 miles, this 2021 Mercedes-Benz GLC AMG Line Premium Plus has covered about 17,800 more miles than other 2021 Mercedes-Benz GLC cars. The dealer is asking £26,990, which is £3,248 above the AskCar estimate of £23,742. 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 recorded this car for sale 17 days ago. Its advertised mileage matches the government's MOT record. The seller is Your Car Group, based in Newport. 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

Above the going rate: £3,248 (13%) over the AskCar estimate of £23,742.

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 17 days.

Price history

AskCar first saw this advert on 21 October 2026 at £25,990. Its asking price is now £26,990, £1,000 more.

Price changes recorded:

• 21 October 2026: £25,990
• 1 November 2026: £26,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 28 March 2027.

It has had 3 MOTs. The latest, on 21 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 54,097 miles, which matches the advertised 66,000 miles.

Advertised mileage is about 17,800 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 £21,950 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, black. Mileage: 62,500 miles. Price: £24,495, £2,495 less 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, £2,000 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-f12e8a449640
• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, white. Mileage: 55,590 miles. Price: £25,995, £995 less than this car. Dealer: Group 1 Automotive Mercedes-Benz Of Norwich in Norwich. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-758b28ed35a1

• The nearest: 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, blue, 2 miles from this car. Mileage: 50,272 miles. Price: £29,290, £2,300 more than this car. Dealer: Auto Unit in Newport. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-ed9f3d927a27