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: 31,007 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 31,007 miles on the clock, this 2021 Mercedes-Benz GLB AMG Line Premium has done roughly 15,900 fewer miles than a typical 2021 Mercedes-Benz GLB. Its asking price of £24,995 is £194 above the AskCar estimate of £24,801. The AskCar estimate draws on 822 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 51 days ago. Its advertised mileage matches the government's MOT record. It is for sale at Simpson Motors in Dunfermline. 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: £194 (under 1%) over the AskCar estimate of £24,801.

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 51 days.

Price history

AskCar first saw this advert on 18 September 2026 at £24,995. 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 30 April 2027.

It has had 4 MOTs. The latest, on 1 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 28,641 miles, which matches the advertised 31,007 miles.

Advertised mileage is about 15,900 miles lower 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 £23,995, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 33,392 miles. Price: £23,900, £1,095 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-7171bd1f6ada
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, blue. Mileage: 41,000 miles. Price: £23,590, £1,405 less 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
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 41,035 miles. Price: £22,950, £2,045 less than this car. Dealer: NSA Motor Vehicles in Milton Keynes. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-11cde202d124

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 140 miles from this car. Mileage: 62,000 miles. Price: £22,950, £2,045 less than this car. Dealer: Auto Q in Belfast. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a153554a972b