2021 Mercedes-Benz GLB 2.0 GLB220d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 GLB220d AMG Line Premium DCT 4WD Euro 6 (s/s) 5dr 8G (187 bhp)
• Year: 2021
• Mileage: 41,419 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: White
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 41,419 miles on the clock, this 2021 Mercedes-Benz GLB AMG Line Premium has done roughly 4,800 fewer miles than a typical 2021 Mercedes-Benz GLB. Its asking price of £22,750 is £690 below the AskCar estimate of £23,440. The AskCar estimate uses UK dealer asking prices, including 848 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 1 day ago. Its advertised mileage matches the government's MOT record. It is for sale at Car Planet Barnet in New Southgate. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £690 (2%) under the AskCar estimate of £23,440.

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 848 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 12 November 2026.

A 2021 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £22,300: the median of the 30 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2021 Mercedes-Benz GLB advertised 1 day ago. About half of 2021 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 78 of the 166 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £22,750. 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 12 November 2026: valid until 21 October 2027.

It has had 3 MOTs. The latest, on 22 October 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; nearside rear tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 41,149 miles, which matches the advertised 41,419 miles.

Advertised mileage is about 4,800 miles lower than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

17 other 2021 Mercedes-Benz GLB AMG Line Premium 2.0 diesel automatic SUVs are for sale at UK dealers, from £18,295 to £24,495, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 41,405 miles. Price: £21,500, £1,250 less than this car. Dealer: Motor Village in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-74710578b958
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 41,035 miles. Price: £22,950, £200 more than this car. Dealer: NSA Motor Vehicles in Milton Keynes. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-11cde202d124
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, blue. Mileage: 41,000 miles. Price: £23,349, £599 more than this car. Dealer: Stratstone Mercedes-Benz of Lakeside in Chafford Hundred and West Thurrock. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-2836aac6f6f1

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey, under a mile from this car. Mileage: 33,453 miles. Price: £23,900, £1,150 more than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-7171bd1f6ada