2021 Mercedes-Benz GLA 2.0 AMG Line Executive

Overview

• Make: Mercedes-Benz
• Model: GLA
• Trim: AMG Line Executive
• Version: 2.0 AMG Line Executive DCT Euro 6 (s/s) 5dr 8G
• Year: 2021
• Mileage: 54,427 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres
• Gearbox: Automatic (DCT)
• Colour: Silver
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLA AMG Line Executive is advertised with 54,427 miles, approximately 14,400 above the typical mileage for its age. The dealer is asking £18,998, which is £474 above the AskCar estimate of £18,524. To work out the AskCar estimate, we analyse UK dealer adverts for 2,487 Mercedes-Benz GLA cars across different ages and specifications. The asking price is now £1,500 lower than when we first recorded the advert 84 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Mercedes-Benz of Grangemouth, based in Grangemouth. 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

Fair price: £474 (2%) over the AskCar estimate of £18,524.

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 2,487 priced Mercedes-Benz GLA adverts across different ages and specifications, as of 7 November 2026.

A 2021 Mercedes-Benz GLA with the 2.0 diesel engine is typically advertised at £20,300: the median of the 103 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Mercedes-Benz GLA has been on sale for at least 84 days.

Price history

AskCar first saw this advert on 15 August 2026 at £20,498. Its asking price is now £18,998, £1,500 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 15 August 2026: £20,498
• 8 October 2026: £19,498
• 21 October 2026: £18,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 13 August 2027.

It has had 4 MOTs. The latest, on 14 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 54,434 miles, which matches the advertised 54,427 miles.

Advertised mileage is about 14,400 miles higher than the median mileage of a 2021 Mercedes-Benz GLA on AskCar.

Similar cars

20 other 2021 Mercedes-Benz GLA AMG Line Executive 2.0 diesel automatic SUVs are for sale at UK dealers, from £11,494 to £23,800, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLA AMG Line Executive, 2.0 diesel SUV, white. Mileage: 53,439 miles. Price: £18,799, £199 less than this car. Dealer: Lookers Mercedes-Benz of Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-40a2c1c6267f
• 2021 Mercedes-Benz GLA AMG Line Executive, 2.0 diesel SUV, silver. Mileage: 55,543 miles. Price: £17,699, £1,299 less than this car. Dealer: Prestige Car Supermarket in York. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-0aa257f6759d
• 2021 Mercedes-Benz GLA AMG Line Executive, 2.0 diesel SUV, black. Mileage: 53,034 miles. Price: £18,100, £898 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-34d786ea857a

• The nearest: 2021 Mercedes-Benz GLA AMG Line Executive, 2.0 diesel SUV, white, 123 miles from this car. Mileage: 45,304 miles. Price: £19,990, £992 more than this car. Dealer: Wilsons of Rathkenny in Ballymena. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-89e5c9afc070