2021 Mercedes-Benz GLA AMG Line
Version: AMG Line Auto Euro 6 5dr
Price: £21,800. Good value: £2,122 (8%) under the AskCar estimate of £23,922, our expected asking price for this car from its model, age, mileage and specification, drawing on 2,501 priced Mercedes-Benz GLA adverts on AskCar as of 29 October 2026.
AskCar lists 2,541 used Mercedes-Benz GLA from 1,313 UK dealerships, as of 29 October 2026.
Overview
- Make
- Mercedes-Benz
- Model
- GLA
- Trim
- AMG Line
- Version
- AMG Line Auto Euro 6 5dr
- Mileage
- 22,186 miles
- Year
- 2021
- Fuel type
- Petrol
- Gearbox
- Automatic
- Seats
- 5
- Colour
- White
- Doors
- 5
- Emissions standard
- Euro 6
About this car
With 22,186 miles on the clock, this 2021 Mercedes-Benz GLA AMG Line has done roughly 17,900 fewer miles than a typical 2021 Mercedes-Benz GLA. The dealer is asking £21,800, which is £2,122 below the AskCar estimate of £23,922. To work out the AskCar estimate, we analyse UK dealer adverts for 2,501 Mercedes-Benz GLA cars across different ages and specifications. We have tracked this advert today. MOT records show an expiry date of 16 April 2027, and the latest recorded mileage is consistent with the advert. The seller is Sytner Select Bristol, based in Bristol.
Stock data as of 29 October 2026.
Price history
AskCar first saw this advert on 29 October 2026.
| Date observed | Asking price |
|---|---|
| 29 October 2026 | £21,800 |
Price and mileage comparison
Good value: £2,122 (8%) under the AskCar estimate of £23,922.
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 2,501 priced Mercedes-Benz GLA adverts across different ages and specifications, as of 29 October 2026.
Advertised mileage is about 17,900 miles lower than the median mileage of a 2021 Mercedes-Benz GLA on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 16 April 2027. 20,852 miles at the last test.
Other matching cars
8 other 2021 Mercedes-Benz GLA AMG Line automatic petrol cars are for sale at UK dealers from £15,836 to £22,099, as of 29 October 2026.
The 5 cheapest:
- 2021 Mercedes-Benz GLA. Price: £15,836. Mileage: 98,833 miles. Dealer: Lookers Volkswagen Darlington in Darlington. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-5714625883d8
- 2021 Mercedes-Benz GLA. Price: £18,260. Mileage: 58,731 miles. Dealer: Jacksons Motor Group in Egdon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-f19603938976
- 2021 Mercedes-Benz GLA. Price: £18,299. Mileage: 53,594 miles. Dealer: Hammond Cars Ipswich in Ipswich. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-8acbb0582a0a
- 2021 Mercedes-Benz GLA. Price: £18,990. Mileage: 48,445 miles. Dealer: Lennox Auto in Brent. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-f8fca53474bf
- 2021 Mercedes-Benz GLA. Price: £19,340. Mileage: 34,020 miles. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/mercedes-benz-gla-2021-d64ee62d1d65
The 8 matching cars have covered 21,349 to 98,833 miles, compared with 22,186 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Mercedes-Benz GLA cars for sale · 2021 Mercedes-Benz GLA price guide
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Photos
12 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 29 October 2026, AskCar lists 587,923 cars and vans from 12,992 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.