2020 Mercedes-Benz GLB 2.0 GLB200d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 GLB200d AMG Line Premium DCT FWD Euro 6 (s/s) 5dr 2) 8G (148 bhp)
• Year: 2020
• Mileage: 50,400 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium has covered 50,400 miles. The dealer is asking £19,050, which is £742 below the AskCar estimate of £19,792. To work out the AskCar estimate, we analyse UK dealer adverts for 841 Mercedes-Benz GLB cars across different ages and specifications. It first appeared in our advert records 4 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Car Planet Barnet in New Southgate. 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: £742 (3%) under the AskCar estimate of £19,792.

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

AskCar first saw this 2020 Mercedes-Benz GLB advertised 4 days ago. About half of 2020 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 56 of the 115 first advertised between 11 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £19,050. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 12 June 2027.

It has had 4 MOTs. The latest, on 11 June 2026, passed.

Advisories at the latest test: offside rear inner tyre worn close to legal limit/worn on edge EDGE WORN.

Mileage at that test: 48,208 miles, which matches the advertised 50,400 miles.

Advertised mileage is about 900 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, black. Mileage: 51,341 miles. Price: £20,995, £1,945 more than this car. Dealer: NottinghamCar.com in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-611ba76014e1
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 51,637 miles. Price: £20,500, £1,450 more than this car. Dealer: Marshall OMODA & JAECOO Lincoln in Lincoln. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-cf9a65566b0f
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 51,780 miles. Price: £21,699, £2,649 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

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 5 miles from this car. Price: £20,995, £1,945 more than this car. Dealer: Auto Bazaa in Enfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-520c617036bf