2021 Mercedes-Benz GLA 2.0 AMG Line
Price: £21,000. Fair price: £60 (under 1%) under the AskCar estimate of £21,060, 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 AMG Line DCT Euro 6 5dr 8G
- Year: 2021
- Mileage: 36,913 miles
- Fuel: Diesel
- Body: 5 doors, 5 seats
- Engine: 2.0 litres
- Gearbox: Automatic (DCT)
- Colour: Grey
- CO2: 142 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 Mercedes-Benz GLA AMG Line has covered 36,913 miles, around 3,100 fewer miles than is typical for its age. Its asking price of £21,000 is £60 below the AskCar estimate of £21,060. The AskCar estimate uses 2,487 UK dealer adverts for the Mercedes-Benz GLA, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner Group Mercedes-Benz of Swindon, based in Swindon. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £60 (under 1%) under the AskCar estimate of £21,060.
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
AskCar first saw this 2021 Mercedes-Benz GLA advertised today. About half of 2021 Mercedes-Benz GLA cars are gone from sale within a month of being advertised: 172 of the 361 first advertised between 11 July 2026 and 4 October 2026.
Price history
AskCar first saw this advert on 7 November 2026 at £21,000. 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 28 July 2027.
It has had 3 MOTs. The latest, on 17 July 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 35,502 miles, which matches the advertised 36,913 miles.
Advertised mileage is about 3,100 miles lower than the median mileage of a 2021 Mercedes-Benz GLA on AskCar.
Browse all Mercedes-Benz GLA cars for sale · 2021 Mercedes-Benz GLA price guide
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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.