2021 Mercedes-Benz GLC 2.0 GLC220d AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLC
• Trim: AMG Line
• Version: 2.0 AMG Line Auto 4WD Euro 6 5dr (191 bhp)
• Year: 2021
• Mileage: 34,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 191 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 166 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Mercedes-Benz GLC AMG Line is 34,000 miles. Its asking price of £23,500 is £2,106 below the AskCar estimate of £25,606. The AskCar estimate uses UK dealer asking prices, including 2,814 Mercedes-Benz GLC adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 4 days ago. Ask the dealer why the advert shows fewer miles than the 34,663 recorded at the latest MOT. Its MOT is recorded as valid until 9 October 2027. The seller is Marshall MINI Salisbury, based in Salisbury. 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

Good value: £2,106 (8%) under the AskCar estimate of £25,606.

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

AskCar first saw this 2021 Mercedes-Benz GLC advertised 4 days ago. About half of 2021 Mercedes-Benz GLC cars are gone from sale within a month of being advertised: 120 of the 247 first advertised between 9 July 2026 and 5 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £23,500. 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 9 October 2027.

It has had 4 MOTs. The latest, on 10 October 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 34,663 miles. The advert says 34,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 14,200 miles lower than the median mileage of a 2021 Mercedes-Benz GLC on AskCar.

Similar cars

14 other 2021 Mercedes-Benz GLC AMG Line 2.0 diesel automatic SUVs are for sale at UK dealers, from £18,490 to £27,999, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLC AMG Line, 2.0 diesel SUV, blue. Mileage: 35,148 miles. Price: £26,345, £2,845 more than this car. Dealer: Sturgess Of Leicester in Leicester. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-7e742b123926
• 2021 Mercedes-Benz GLC AMG Line, 2.0 diesel SUV, white. Mileage: 27,160 miles. Price: £27,495, £3,995 more than this car. Dealer: V12 Sports & Classics Ltd - Wolverhampton in Wolverhampton. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-66a7f35e7bdf
• 2021 Mercedes-Benz GLC AMG Line, 2.0 diesel SUV, silver. Mileage: 43,340 miles. Price: £23,104, £396 less than this car. Dealer: Lookers Mercedes-Benz of Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-9cd3d68986a3

• The nearest: 2021 Mercedes-Benz GLC AMG Line, 2.0 diesel SUV, black, 61 miles from this car. Mileage: 44,556 miles. Price: £25,490, £1,990 more than this car. Dealer: HCL Prestige Car Supermarket in Ashford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glc-2021-4fecf262819a