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 Coupe (242 bhp)
• Year: 2021
• Mileage: 37,874 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: 184 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLC AMG Line Premium Plus is advertised with 37,874 miles, approximately 10,300 below the typical mileage for its age. The AskCar estimate for this car is £30,960. It is priced at £31,000, which is £40 above that estimate. The AskCar estimate draws on 2,814 Mercedes-Benz GLC adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 25 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at R S Car Sales in Crewe. 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: £40 (under 1%) over the AskCar estimate of £30,960.

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 25 days.

Price history

AskCar first saw this advert on 14 October 2026 at £31,000. 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 7 May 2027.

It has had 6 MOTs. The latest, on 16 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 38,129 miles, which matches the advertised 37,874 miles.

Advertised mileage is about 10,300 miles lower 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 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, white. Mileage: 37,000 miles. Price: £22,495, £8,505 less than this car. Dealer: Brownstone Motors in Barnsley. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-730f019a0f3e
• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, grey. Mileage: 36,797 miles. Price: £31,495, £495 more than this car. Dealer: A1 Auto Solutions in Maidenhead. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-9cd38113adbc
• 2021 Mercedes-Benz GLC AMG Line Premium Plus, 2.0 diesel SUV, blue. Mileage: 39,052 miles. Price: £27,495, £3,505 less than this car. Dealer: Josh Houghton Motor Company in Wigan. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-b365cad07b17