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: 81,078 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: Grey
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz GLB AMG Line Premium is advertised with 81,078 miles, approximately 29,700 above the typical mileage for its age. The dealer is asking £16,999, which is £650 below the AskCar estimate of £17,649. To work out the AskCar estimate, we analyse UK dealer adverts for 863 Mercedes-Benz GLB cars across different ages and specifications. We first saw this car advertised 54 days ago. Its asking price has since fallen by £1,550. The government's MOT record matches its advertised mileage. It is for sale at cinch Corby in North Northamptonshire. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £650 (3%) under the AskCar estimate of £17,649.

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 863 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 6 November 2026.

A 2020 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £21,000: the median of the 43 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 Mercedes-Benz GLB has been on sale for at least 54 days.

Price history

AskCar first saw this advert on 13 September 2026 at £18,549. Its asking price is now £16,999, £1,550 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 13 September 2026: £18,549
• 15 September 2026: £19,199
• 22 September 2026: £18,099
• 24 September 2026: £17,999
• 20 October 2026: £17,799
• 24 October 2026: £17,599
• 31 October 2026: £16,899
• 6 November 2026: £16,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 16 August 2027.

It has had 5 MOTs. The latest, on 17 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 80,944 miles, which matches the advertised 81,078 miles.

Advertised mileage is about 29,700 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 6 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 76,883 miles. Price: £18,260, £1,261 more than this car. Dealer: Lookers Volkswagen Teesside in Teesside. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-8a66cf6cf9a9
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 86,000 miles. Price: £18,980, £1,981 more than this car. Dealer: Kent Vehicles in Herne Common. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-44f4cc78bd5d
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 71,484 miles. Price: £19,180, £2,181 more than this car. Dealer: Hippo Motor Group Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-0e633506e8c3

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 17 miles from this car. Mileage: 59,400 miles. Price: £20,490, £3,491 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-8ce072a5e4ba