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: 48,353 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: White
• CO2: 161 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium is advertised with 48,353 miles, approximately 3,000 below the typical mileage for its age. Priced at £20,999, it is advertised £1,110 below the AskCar estimate of £22,109. The AskCar estimate draws on 802 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 65 days ago. Its asking price has since fallen by £1,813. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Hedin Automotive Mercedes-Benz And Smart Of Croydon, based in Croydon. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,110 (5%) under the AskCar estimate of £22,109.

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 802 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 9 November 2026.

A 2020 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £21,000: the median of the 41 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2020 Mercedes-Benz GLB has been on sale for at least 65 days.

Price history

AskCar first saw this advert on 5 September 2026 at £22,812. Its asking price is now £20,999, £1,813 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 5 September 2026: £22,812
• 11 September 2026: £22,253
• 12 September 2026: £22,139
• 16 September 2026: £22,198
• 23 September 2026: £21,895
• 24 September 2026: £21,842
• 29 September 2026: £21,725
• 1 October 2026: £21,660
• 6 October 2026: £21,397
• 17 October 2026: £21,380
• 22 October 2026: £20,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 8 September 2027.

It has had 4 MOTs. The latest, on 25 August 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge; nearside rear tyre slightly damaged/cracking or perishing; and 2 more.

Mileage at that test: 48,694 miles, which matches the advertised 48,353 miles.

Advertised mileage is about 3,000 miles lower than the median mileage of a 2020 Mercedes-Benz GLB on AskCar.

Similar cars

27 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 9 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 48,893 miles. Price: £19,900, £1,099 less than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-346ad91c1f04
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 47,457 miles. Price: £19,317, £1,682 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, £1,949 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, grey, 17 miles from this car. Mileage: 51,813 miles. Price: £21,200, £201 more than this car. Dealer: Marshall Nissan Dartford in Dartford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-64204af2b95b