2021 Mercedes-Benz GLB 2.0 GLB220d AMG Line Premium Plus

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium Plus
• Version: 2.0 GLB220d AMG Line Premium Plus DCT 4WD Euro 6 (s/s) 5dr 8G (187 bhp)
• Year: 2021
• Mileage: 83,251 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 83,251 miles, this 2021 Mercedes-Benz GLB AMG Line Premium Plus has covered about 35,900 more miles than other 2021 Mercedes-Benz GLB cars. Priced at £20,350, it is advertised £84 above the AskCar estimate of £20,266. To work out the AskCar estimate, we analyse UK dealer adverts for 835 Mercedes-Benz GLB cars across different ages and specifications. We have tracked this advert today. The government's MOT record matches its advertised mileage. You can find this car at Car Planet Watford in Rickmansworth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £84 (under 1%) over the AskCar estimate of £20,266.

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 835 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 10 November 2026.

A 2021 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £22,800: the median of the 30 for sale on AskCar, as of 10 November 2026.

Time on sale

AskCar first saw this 2021 Mercedes-Benz GLB advertised today. About half of 2021 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 78 of the 162 first advertised between 11 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £20,350. 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 10 November 2026: valid until 25 November 2026.

It has had 3 MOTs. The latest, on 13 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 63,529 miles, which matches the advertised 83,251 miles.

Advertised mileage is about 35,900 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

5 other 2021 Mercedes-Benz GLB AMG Line Premium Plus 2.0 diesel automatic SUVs are for sale at UK dealers, from £19,490 to £24,955, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 2.0 diesel SUV, black. Mileage: 94,000 miles. Price: £19,490, £860 less than this car. Dealer: LVMC in High Ongar. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-5db032f04daf
• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 2.0 diesel SUV, red. Mileage: 45,672 miles. Price: £22,990, £2,640 more than this car. Dealer: Eastern Western Motor Group Western Mercedes-Benz of Coldstream in Coldstream. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-2a926dca8949
• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 2.0 diesel SUV, black. Mileage: 43,800 miles. Price: £23,180, £2,830 more than this car. Dealer: Hilton Garage in Derby. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-542b5eee3dea

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium Plus, 2.0 diesel SUV, grey, under a mile from this car. Mileage: 35,546 miles. Price: £24,250, £3,900 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-e2c1645c8abd