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 (5 Seat) (187 bhp)
• Year: 2021
• Mileage: 62,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 161 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line Premium is advertised with 62,000 miles, approximately 15,100 above the typical mileage for its age. The AskCar estimate for this car is £21,907. It is priced at £22,950, which is £1,043 above that estimate. The AskCar estimate uses UK dealer asking prices, including 822 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 17 days. The government's MOT record matches its advertised mileage. You can find this car at Auto Q in Belfast. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,043 (4%) over the AskCar estimate of £21,907.

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 822 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 8 November 2026.

A 2021 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £23,000: the median of the 27 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 17 days.

Price history

AskCar first saw this advert on 22 October 2026 at £22,950. 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 8 November 2026: valid until 13 April 2027.

It has had one MOT, on 14 April 2025, and passed.

There were no advisories at the latest test.

Mileage at that test: 49,972 miles, which matches the advertised 62,000 miles.

Advertised mileage is about 15,100 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

14 other 2021 Mercedes-Benz GLB AMG Line Premium 2.0 diesel automatic SUVs are for sale at UK dealers, from £19,490 to £24,995, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, silver. Mileage: 62,500 miles. Price: £20,500, £2,450 less than this car. Dealer: Colin Ludwell Cars in Bristol. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-1ae87933a2f3
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, red. Mileage: 64,540 miles. Price: £19,886, £3,064 less than this car. Dealer: Heritage Honda Gloucester in Gloucester. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-20589ade1fdf
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 55,800 miles. Price: £22,699, £251 less than this car. Dealer: Lookers Mercedes-Benz of Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-9274b08ffd64

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 23 miles from this car. Mileage: 53,211 miles. Price: £23,995, £1,045 more than this car. Dealer: Agnew Group Mercedes-Benz Of Portadown in Portadown. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-78e245e60875