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: 75,325 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 is advertised with 75,325 miles, approximately 27,200 above the typical mileage for its age. Priced at £22,991, it is advertised £1,008 above the AskCar estimate of £21,983. The AskCar estimate draws on 2,814 Mercedes-Benz GLC adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 50 days ago. Its asking price has since fallen by £500. The recorded MOT expired on 3 November 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Greenaway Autos in Pontypridd. 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: £1,008 (4%) over the AskCar estimate of £21,983.

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 50 days.

Price history

AskCar first saw this advert on 19 September 2026 at £23,491. Its asking price is now £22,991, £500 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 19 September 2026: £23,491
• 24 October 2026: £22,991

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: the latest record we hold ran out on 3 November 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 24 October 2025, passed.

Advisories at the latest test: nearside front tyre slightly damaged slight damage to outer wall; front brake pad(s) wearing thin.

Mileage at that test: 70,269 miles, which matches the advertised 75,325 miles.

Advertised mileage is about 27,200 miles higher 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, red. Mileage: 77,400 miles. Price: £18,990, £4,001 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-5b51b8f567ec
• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, black. Mileage: 71,505 miles. Price: £20,280, £2,711 less than this car. Dealer: Ryders of Warrington in Warrington. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-d41d8f29b9bc
• 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, blue. Mileage: 69,800 miles. Price: £20,490, £2,501 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-0f710870420d

• The nearest: 2021 Mercedes-Benz GLC AMG Line Premium, 2.0 diesel SUV, black, 43 miles from this car. Mileage: 61,140 miles. Price: £22,950, the same price as this car. Dealer: Islington Motor Group Bath MG & Suzuki in Bath. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-c031bf83037b