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: 60,512 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: Grey
• CO2: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium is advertised with 60,512 miles, approximately 9,200 above the typical mileage for its age. Its asking price of £20,200 is £132 below the AskCar estimate of £20,332. The AskCar estimate draws on 835 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 48 days ago. Its asking price has since fallen by £1,600. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Marshall Approved Used Melton Mowbray, based in Melton Mowbray. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £132 (under 1%) under the AskCar estimate of £20,332.

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 835 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 10 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 10 November 2026.

Time on sale

This 2020 Mercedes-Benz GLB has been on sale for at least 48 days.

Price history

AskCar first saw this advert on 23 September 2026 at £21,800. Its asking price is now £20,200, £1,600 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 23 September 2026: £21,800
• 7 October 2026: £21,100
• 16 October 2026: £21,200
• 23 October 2026: £20,800
• 28 October 2026: £20,600
• 6 November 2026: £20,200

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 21 December 2026.

It has had 3 MOTs. The latest, on 17 December 2025, passed.

Advisories at the latest test: front brake pad(s) wearing thin.

Mileage at that test: 50,034 miles, which matches the advertised 60,512 miles.

Advertised mileage is about 9,200 miles higher than the median mileage of a 2020 Mercedes-Benz GLB on AskCar.

Similar cars

25 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 10 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 59,591 miles. Price: £24,995, £4,795 more than this car. Dealer: Agnew Group Mercedes-Benz Of Belfast in Belfast. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-3807ca061664
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 59,400 miles. Price: £20,490, £290 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-8ce072a5e4ba
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, blue. Mileage: 55,555 miles. Price: £22,000, £1,800 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

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 16 miles from this car. Mileage: 51,341 miles. Price: £20,995, £795 more than this car. Dealer: NottinghamCar.com in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-611ba76014e1