2021 Mercedes-Benz GLA 2.0 GLA220d AMG Line

Price: £18,450. Fair price: £803 (4%) under the AskCar estimate of £19,253, our expected asking price for this car from its model, age, mileage and specification, drawing on 2,487 priced Mercedes-Benz GLA adverts on AskCar as of 7 November 2026.

AskCar lists 2,559 used Mercedes-Benz GLA from 1,304 UK dealerships, as of 7 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: GLA
  • Trim: AMG Line
  • Version: 2.0 GLA220d AMG Line DCT 4WD Euro 6 (s/s) 5dr 8G (187 bhp)
  • Year: 2021
  • Mileage: 63,359 miles
  • Fuel: Diesel
  • Body: SUV, 5 doors, 5 seats
  • Engine: 2.0 litres, 187 bhp
  • Gearbox: Automatic (DCT)
  • Drive: Four-wheel drive
  • Colour: Black
  • CO2: 148 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 63,359 miles, this 2021 Mercedes-Benz GLA AMG Line has covered about 23,400 more miles than other 2021 Mercedes-Benz GLA cars. Its asking price of £18,450 is £803 below the AskCar estimate of £19,253. The AskCar estimate uses 2,487 UK dealer adverts for the Mercedes-Benz GLA, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 8 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Car Planet Watford, based in Rickmansworth. 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: £803 (4%) under the AskCar estimate of £19,253.

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 8 days.

Price history

AskCar first saw this advert on 30 October 2026 at £18,450. 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 7 November 2026: valid until 7 March 2027.

It has had 4 MOTs. The latest, on 6 March 2026, passed.

Advisories at the latest test: front brake disc worn, but not excessively; offside rear child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 58,754 miles, which matches the advertised 63,359 miles.

Advertised mileage is about 23,400 miles higher than the median mileage of a 2021 Mercedes-Benz GLA on AskCar.

Similar cars

9 other 2021 Mercedes-Benz GLA AMG Line 2.0 diesel automatic SUVs are for sale at UK dealers, from £17,790 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 SUV, silver. Mileage: 65,662 miles. Price: £17,990, £460 less than this car. Dealer: Group 1 Automotive Mercedes-Benz of North Wales in Conwy. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-3dde39728abd
  • 2021 Mercedes-Benz GLA AMG Line, 2.0 diesel SUV, grey. Mileage: 66,064 miles. Price: £17,790, £660 less than this car. Dealer: Phantom Motor Company in Hindley Green. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-540c1de8fbc1
  • 2021 Mercedes-Benz GLA AMG Line, 2.0 diesel SUV, black. Mileage: 52,967 miles. Price: £19,995, £1,545 more than this car. Dealer: Ideal Car Centre in Bilston. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-2211ab7cc2bb
  • The nearest: 2021 Mercedes-Benz GLA AMG Line, 2.0 diesel SUV, white, 2 miles from this car. Mileage: 46,000 miles. Price: £20,880, £2,430 more than this car. Dealer: Wembley Prestige Cars in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-b46c63c27aee

Browse all Mercedes-Benz GLA cars for sale · 2021 Mercedes-Benz GLA price guide

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Photos

39 photos of this car are on its AskCar page.

As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.