2021 Mercedes-Benz GLB 2.0 GLB200d AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line
• Version: 2.0 GLB200d AMG Line DCT FWD Euro 6 (s/s) 5dr 8G (148 bhp)
• Year: 2021
• Mileage: 53,873 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: White
• CO2: 148 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 53,873 miles, this 2021 Mercedes-Benz GLB AMG Line has covered about 7,200 more miles than other 2021 Mercedes-Benz GLB cars. The AskCar estimate for this car is £20,723. It is priced at £20,699, which is £24 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 863 Mercedes-Benz GLB cars across different ages and specifications. The asking price is now £300 lower than when we first recorded the advert 30 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Henson Car Store in Newcastle Upon Tyne. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £24 (under 1%) under the AskCar estimate of £20,723.

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 863 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 6 November 2026.

A 2021 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £22,800: the median of the 28 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 30 days.

Price history

AskCar first saw this advert on 7 October 2026 at £20,999. Its asking price is now £20,699, £300 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 7 October 2026: £20,999
• 21 October 2026: £20,949
• 28 October 2026: £20,899
• 31 October 2026: £20,799
• 3 November 2026: £20,699

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 21 September 2027.

It has had 5 MOTs. The latest, on 22 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,850 miles, which matches the advertised 53,873 miles.

Advertised mileage is about 7,200 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

2 other 2021 Mercedes-Benz GLB AMG Line 2.0 diesel automatic SUVs are for sale at UK dealers, from £17,450 to £23,499, as of 6 November 2026.

The 2 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 2.0 diesel SUV, white. Mileage: 53,361 miles. Price: £23,499, £2,800 more than this car. Dealer: Stratstone Mercedes-Benz Of Hamilton in Hamilton. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-c3cd6f7d419c
• 2021 Mercedes-Benz GLB AMG Line, 2.0 diesel SUV, black. Mileage: 76,940 miles. Price: £17,450, £3,249 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-ea1c41a39812