2021 Mercedes-Benz GLA 2.0 AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLA
• Trim: AMG Line
• Version: 2.0 AMG Line DCT Euro 6 5dr 8G
• Year: 2021
• Mileage: 24,733 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres
• Gearbox: Automatic (DCT)
• Colour: Black
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 24,733 miles on the clock, this 2021 Mercedes-Benz GLA AMG Line has done roughly 15,300 fewer miles than a typical 2021 Mercedes-Benz GLA. The dealer is asking £20,498, which is £1,127 below the AskCar estimate of £21,625. To work out the AskCar estimate, we analyse UK dealer adverts for 2,487 Mercedes-Benz GLA cars across different ages and specifications. Since we first spotted the advert 18 days ago, the asking price has dropped by £500. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Kilmarnock Peugeot Jeep Leapmotor, based in Kilmarnock. 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: £1,127 (5%) under the AskCar estimate of £21,625.

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 18 days.

Price history

AskCar first saw this advert on 20 October 2026 at £20,998. Its asking price is now £20,498, £500 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 20 October 2026: £20,998
• 29 October 2026: £20,698
• 6 November 2026: £20,498

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 16 October 2027.

It has had 4 MOTs. The latest, on 17 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,739 miles, which matches the advertised 24,733 miles.

Advertised mileage is about 15,300 miles lower than the median mileage of a 2021 Mercedes-Benz GLA on AskCar.

Similar cars

4 other 2021 Mercedes-Benz GLA AMG Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £17,995 to £24,495, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLA AMG Line, 2.0 diesel hatchback, grey. Mileage: 25,299 miles. Price: £21,498, £1,000 more than this car. Dealer: Arnold Clark Ayr Kia in Prestwick. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-5a98adb6087c
• 2021 Mercedes-Benz GLA AMG Line, 2.0 diesel hatchback, silver. Mileage: 21,766 miles. Price: £24,495, £3,997 more than this car. Dealer: Sandown Group Mercedes-Benz of Poole in Poole. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-4072adb8f79d
• 2021 Mercedes-Benz GLA AMG Line, 2.0 diesel hatchback, black. Mileage: 49,207 miles. Price: £19,000, £1,498 less than this car. Dealer: JCT600 Approved Leeds in Leeds. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-a942f4a4fcdb