2020 Mercedes-Benz GLB 2.0 AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 AMG Line Premium Auto Euro 6 5dr
• Year: 2020
• Mileage: 51,637 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: White
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium has covered 51,637 miles. The dealer is asking £20,500, which is £851 below the AskCar estimate of £21,351. To work out the AskCar estimate, we analyse UK dealer adverts for 822 Mercedes-Benz GLB cars across different ages and specifications. The asking price is now £2,495 lower than when we first recorded the advert 120 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Marshall OMODA & JAECOO Lincoln, based in Lincoln. 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: £851 (3%) under the AskCar estimate of £21,351.

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 2020 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £21,000: the median of the 42 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2020 Mercedes-Benz GLB has been on sale for at least 120 days.

Price history

AskCar first saw this advert on 11 July 2026 at £22,995. Its asking price is now £20,500, £2,495 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 11 July 2026: £22,995
• 14 July 2026: £23,295
• 23 July 2026: £23,500
• 3 August 2026: £23,000
• 5 August 2026: £22,800
• 7 August 2026: £22,700
• 13 August 2026: £22,500
• 21 August 2026: £22,300
• 28 August 2026: £22,000
• 5 September 2026: £21,800
• 11 September 2026: £21,600
• 18 September 2026: £21,500
• 25 September 2026: £21,600
• 1 October 2026: £21,300
• 15 October 2026: £20,600
• 22 October 2026: £20,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 21 November 2026.

It has had 3 MOTs. The latest, on 22 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 47,344 miles, which matches the advertised 51,637 miles.

Advertised mileage is about 200 miles higher than the median mileage of a 2020 Mercedes-Benz GLB on AskCar.

Similar cars

28 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 8 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 51,780 miles. Price: £21,699, £1,199 more than this car. Dealer: Lookers Mercedes-Benz of Stoke in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-47d24d5b520d
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 51,813 miles. Price: £21,200, £700 more than this car. Dealer: Marshall Nissan Dartford in Dartford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-64204af2b95b
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 51,341 miles. Price: £20,995, £495 more than this car. Dealer: NottinghamCar.com in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-611ba76014e1

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey, 27 miles from this car. Mileage: 67,137 miles. Price: £19,798, £702 less than this car. Dealer: Eddie Wright Car Supermarket in Scunthorpe. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-f5e2bbd61c9f