2020 Mercedes-Benz G Class 4.0 G63 V8 BiTurbo AMG

Overview

• Make: Mercedes-Benz
• Model: G Class
• Trim: AMG
• Version: 4.0 G63 V8 BiTurbo AMG Auto 4WD Euro 6 (s/s) 5dr SpdS+9GT (577 bhp)
• Year: 2020
• Mileage: 25,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 577 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Green
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz G Class AMG is advertised with 25,000 miles, approximately 19,900 below the typical mileage for its age. Its asking price of £127,995 is £10,252 below the AskCar estimate of £138,247. To work out the AskCar estimate, we analyse UK dealer adverts for 413 Mercedes-Benz G Class cars across different ages and specifications. Since we first spotted the advert 151 days ago, the asking price has dropped by £12,000. The seller is The Motoring Team, based in London. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £10,252 (7%) under the AskCar estimate of £138,247.

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 413 priced Mercedes-Benz G Class adverts across different ages and specifications, as of 8 November 2026.

A 2020 Mercedes-Benz G Class with the 4.0 petrol engine is typically advertised at £125,000: the median of the 31 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2020 Mercedes-Benz G Class has been on sale for at least 151 days.

Price history

AskCar first saw this advert on 10 June 2026 at £139,995. Its asking price is now £127,995, £12,000 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 10 June 2026: £139,995
• 1 July 2026: £134,995
• 30 September 2026: £129,995
• 24 October 2026: £127,995

Mileage and MOT

Advertised mileage is about 19,900 miles lower than the median mileage of a 2020 Mercedes-Benz G Class on AskCar.

Similar cars

26 other 2020 Mercedes-Benz G Class AMG 4.0 petrol automatic SUVs are for sale at UK dealers, from £107,949 to £240,000, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 26,000 miles. Price: £229,995, £102,000 more than this car. Dealer: Polo Prestige in Sittingbourne. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-347cd29c6b42
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 28,403 miles. Price: £134,995, £7,000 more than this car. Dealer: RPM Motors (N.I.) in Belfast. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-3bd6be29b9a1
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 18,000 miles. Price: £129,995, £2,000 more than this car. Dealer: Andreas Prestige in Hillingdon. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-5cdcb0840e2c