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: 53,695 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: Black
• CO2: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium has covered 53,695 miles, around 2,400 more miles than is typical for its age. The AskCar estimate for this car is £21,129. It is priced at £21,899, which is £770 above that estimate. The AskCar estimate uses UK dealer asking prices, including 841 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 17 days ago, the asking price has dropped by £400. Its advertised mileage matches the government's MOT record. The seller is Lookers Mercedes-Benz of Maidstone, based in Maidstone. 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

Fair price: £770 (3%) over the AskCar estimate of £21,129.

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 17 days.

Price history

AskCar first saw this advert on 21 October 2026 at £22,299. Its asking price is now £21,899, £400 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 21 October 2026: £22,299
• 25 October 2026: £21,999
• 31 October 2026: £21,899
• 2 November 2026: £21,999
• 7 November 2026: £21,899

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 22 April 2027.

It failed its MOT on 13 April 2026 (offside rear tyre has a cut in excess of the requirements deep enough to reach the ply or cords) and passed 1 day later, on 14 April 2026.

There were no advisories at the latest test.

Mileage at that test: 47,960 miles, which matches the advertised 53,695 miles.

Advertised mileage is about 2,400 miles higher 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, grey. Mileage: 55,506 miles. Price: £19,929, £1,970 less than this car. Dealer: Stratstone Mercedes-Benz of Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-e1e82233bf86
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, blue. Mileage: 55,555 miles. Price: £22,500, £601 more than this car. Dealer: Sytner Group Mercedes-Benz of Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-b6d18aa575e4
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 51,813 miles. Price: £21,200, £699 less than this car. Dealer: Marshall Nissan Dartford in Dartford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-64204af2b95b

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey, 7 miles from this car. Mileage: 48,893 miles. Price: £19,900, £1,999 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