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 (5 Seat) (187 bhp)
• Year: 2020
• Mileage: 48,893 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 161 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium is advertised with 48,893 miles, approximately 2,400 below the typical mileage for its age. The dealer is asking £19,900, which is £2,132 below the AskCar estimate of £22,032. To work out the AskCar estimate, we analyse UK dealer adverts for 841 Mercedes-Benz GLB cars across different ages and specifications. Since we first spotted the advert 110 days ago, the asking price has dropped by £2,530. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Big Motoring World Blue Bell Hill, based in Chatham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Good value: £2,132 (9%) under the AskCar estimate of £22,032.

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 841 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 7 November 2026.

A 2020 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £21,000: the median of the 44 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2020 Mercedes-Benz GLB has been on sale for at least 110 days.

Price history

AskCar first saw this advert on 20 July 2026 at £22,430. Its asking price is now £19,900, £2,530 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 20 July 2026: £22,430
• 30 July 2026: £22,260
• 3 August 2026: £22,240
• 8 August 2026: £21,740
• 11 August 2026: £21,550
• 19 August 2026: £21,200
• 26 September 2026: £19,890
• 29 September 2026: £19,830
• 30 September 2026: £19,770
• 1 October 2026: £19,790
• 3 October 2026: £19,800
• 6 October 2026: £19,820
• 7 October 2026: £19,800
• 13 October 2026: £19,580
• 19 October 2026: £20,060
• 4 November 2026: £19,900

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 27 March 2027.

It has had 4 MOTs. The latest, on 26 March 2026, passed.

Advisories at the latest test: rear tyre worn close to legal limit/worn on edge both.

Mileage at that test: 45,949 miles, which matches the advertised 48,893 miles.

Advertised mileage is about 2,400 miles lower than the median mileage of a 2020 Mercedes-Benz GLB on AskCar.

Similar cars

29 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 7 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 48,353 miles. Price: £20,999, £1,099 more than this car. Dealer: Hedin Automotive Mercedes-Benz And Smart Of Croydon in Croydon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-4994a5395148
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 47,457 miles. Price: £19,317, £583 less than this car. Dealer: Carsa Cannock in Cannock. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-7fff2c83986a
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 50,400 miles. Price: £19,050, £850 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-a16ff6a747c0

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 7 miles from this car. Mileage: 53,695 miles. Price: £21,899, £1,999 more than this car. Dealer: Lookers Mercedes-Benz of Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-d4cd7ed39948