2020 Mercedes-Benz GLB 2.0 GLB220d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 GLB220d AMG Line Premium DCT 4WD Euro 6 (s/s) 5dr 8G (5 Seat) (187 bhp)
• Year: 2020
• Mileage: 40,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 161 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 40,000 miles on the clock, this 2020 Mercedes-Benz GLB AMG Line Premium has done roughly 11,300 fewer miles than a typical 2020 Mercedes-Benz GLB. The dealer is asking £22,780, which is £243 below the AskCar estimate of £23,023. To work out the AskCar estimate, we analyse UK dealer adverts for 841 Mercedes-Benz GLB cars across different ages and specifications. Since we first spotted the advert 115 days ago, the asking price has dropped by £1,210. Our records show an MOT expiry date of 23 October 2026, which has passed. Ask the dealer for an update. Its advertised mileage matches the government's MOT record. It is advertised by Phantom Motor Company in Wigan. 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: £243 (1%) under the AskCar estimate of £23,023.

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 115 days.

Price history

AskCar first saw this advert on 15 July 2026 at £23,990. Its asking price is now £22,780, £1,210 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 16 July 2026: £23,990
• 20 August 2026: £23,480
• 12 September 2026: £22,980
• 21 October 2026: £22,780

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: the latest record we hold ran out on 23 October 2026; ask the dealer for the current MOT.

It has had 4 MOTs. The latest, on 13 October 2025, passed.

Advisories at the latest test: front tyre worn close to legal limit/worn on edge both front tyres worn on outside edge.

Mileage at that test: 32,029 miles, which matches the advertised 40,000 miles.

Advertised mileage is about 11,300 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, white. Mileage: 41,915 miles. Price: £22,650, £130 less than this car. Dealer: Group 1 Automotive Mercedes-Benz Of Cambridge in Cambridge. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-37501c2b7d75
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 37,770 miles. Price: £22,077, £703 less than this car. Dealer: LSH Auto Mercedes-Benz of Stockport in Stockport. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-8d98a9ccf3df
• 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey. Mileage: 43,000 miles. Price: £23,995, £1,215 more than this car. Dealer: Steven Eagell Toyota Birmingham in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-6424789a8c0a

• The nearest: 2020 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white, 16 miles from this car. Mileage: 43,467 miles. Price: £22,695, £85 less than this car. Dealer: Motor Trust Haslingden in Haslingden. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2020-16b2c166d2db