2020 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: 2020
• Mileage: 66,496 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: White
• CO2: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium is advertised with 66,496 miles, approximately 14,700 above the typical mileage for its age. Priced at £19,600, it is advertised £320 below the AskCar estimate of £19,920. The AskCar estimate uses UK dealer asking prices, including 848 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 1 day ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Car Planet Barnet, based 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: £320 (1%) under the AskCar estimate of £19,920.

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 2020 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £20,500: the median of the 41 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2020 Mercedes-Benz GLB advertised 1 day ago. About half of 2020 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 56 of the 117 first advertised between 13 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £19,600. 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 4 July 2027.

It has had 5 MOTs. The latest, on 10 June 2026, passed.

Advisories at the latest test: rear outer drive shaft joint constant velocity boot severely deteriorated both sides.

Mileage at that test: 61,100 miles, which matches the advertised 66,496 miles.

Advertised mileage is about 14,700 miles higher than the median mileage of a 2020 Mercedes-Benz GLB on AskCar.

Similar cars

26 other 2020 Mercedes-Benz GLB AMG Line Premium 2.0 diesel automatic SUVs are for sale at UK dealers, from £16,000 to £24,995, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 67,137 miles. Price: £19,798, £198 more than this car. Dealer: Eddie Wright Car Supermarket in Scunthorpe. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-f5e2bbd61c9f
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 68,500 miles. Price: £18,599, £1,001 less than this car. Dealer: Prestige Car Supermarket in York. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-128a4ccd34d4
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 70,448 miles. Price: £17,990, £1,610 less than this car. Dealer: Westley Motor Company in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-6a5084939c2e

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, under a mile from this car. Mileage: 50,400 miles. Price: £19,050, £550 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-a16ff6a747c0