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: 37,796 miles
• Fuel: Diesel
• Body: 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

This 2021 Mercedes-Benz GLA AMG Line is advertised with 37,796 miles, approximately 2,200 below the typical mileage for its age. The AskCar estimate for this car is £21,103. It is priced at £20,250, which is £853 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 2,429 Mercedes-Benz GLA cars across different ages and specifications. Since we first spotted the advert 13 days ago, the asking price has dropped by £150. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Select Cardiff, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £853 (4%) under the AskCar estimate of £21,103.

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 2,429 priced Mercedes-Benz GLA adverts across different ages and specifications, as of 9 November 2026.

A 2021 Mercedes-Benz GLA with the 2.0 diesel engine is typically advertised at £20,700: the median of the 96 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2021 Mercedes-Benz GLA has been on sale for at least 13 days.

Price history

AskCar first saw this advert on 27 October 2026 at £20,400. Its asking price is now £20,250, £150 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 27 October 2026: £20,400
• 5 November 2026: £20,250

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 4 October 2027.

It has had 5 MOTs. The latest, on 5 October 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge bald inner edge.

Mileage at that test: 37,365 miles, which matches the advertised 37,796 miles.

Advertised mileage is about 2,200 miles lower than the median mileage of a 2021 Mercedes-Benz GLA on AskCar.