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: 51,530 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: 172 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLC AMG Line Premium has covered 51,530 miles, around 3,400 more miles than is typical for its age. The AskCar estimate for this car is £25,462. It is priced at £23,195, which is £2,267 below that estimate. The AskCar estimate uses UK dealer asking prices, including 2,776 Mercedes-Benz GLC adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 27 days ago. Its asking price has since fallen by £300. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is V12 Sports & Classics Ltd - Stoke-On-Trent, based in Stoke-on-Trent. 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

Good value: £2,267 (8%) under the AskCar estimate of £25,462.

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 2,776 priced Mercedes-Benz GLC adverts across different ages and specifications, as of 9 November 2026.

A 2021 Mercedes-Benz GLC with the 2.0 diesel engine is typically advertised at £24,800: the median of the 122 for sale on AskCar, as of 9 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 13 October 2026 at £23,495. Its asking price is now £23,195, £300 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 13 October 2026: £23,495
• 4 November 2026: £23,195

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 5 October 2027.

It has had 4 MOTs. The latest, on 6 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 51,512 miles, which matches the advertised 51,530 miles.

Advertised mileage is about 3,400 miles higher than the median mileage of a 2021 Mercedes-Benz GLC on AskCar.

Similar cars

30 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 9 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, blue. Mileage: 50,961 miles. Price: £24,410, £1,215 more than this car. Dealer: Evans Halshaw Citroen Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-cf20c54ba55f
• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, black. Mileage: 50,177 miles. Price: £25,995, £2,800 more than this car. Dealer: A1 Auto Solutions in Maidenhead. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-75a84fcfa062
• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 50,000 miles. Price: £23,495, £300 more than this car. Dealer: Amanah Prestige in Barking and Dagenham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-d2a2d78c7f66

• The nearest: 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, grey, 30 miles from this car. Mileage: 40,310 miles. Price: £27,100, £3,905 more than this car. Dealer: Evans Halshaw BYD Shrewsbury in Shrewsbury. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-ea79870bac22