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: 38,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 577 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 38,000 miles on the clock, this 2020 Mercedes-Benz G Class AMG has done roughly 6,900 fewer miles than a typical 2020 Mercedes-Benz G Class. Its asking price of £128,995 is £472 below the AskCar estimate of £129,467. The AskCar estimate uses UK dealer asking prices, including 408 Mercedes-Benz G Class adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 163 days ago. Its asking price has since fallen by £3,000. It is advertised by Car Hunters in Steeple. 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: £472 (under 1%) under the AskCar estimate of £129,467.

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 408 priced Mercedes-Benz G Class adverts across different ages and specifications, as of 7 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 7 November 2026.

Time on sale

This 2020 Mercedes-Benz G Class has been on sale for at least 163 days.

Price history

AskCar first saw this advert on 28 May 2026 at £131,995. Its asking price is now £128,995, £3,000 less. The latest price cut was seen on 9 October 2026.

Price changes recorded:

• 29 May 2026: £131,995
• 9 October 2026: £128,995

Mileage and MOT

Advertised mileage is about 6,900 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 7 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 36,295 miles. Price: £121,995, £7,000 less than this car. Dealer: Warford Cars in Altrincham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-9b24530fd930
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 36,000 miles. Price: £129,995, £1,000 more than this car. Dealer: Hampton Car Sales in Milton Malsor. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-206f2b7a190d
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 40,916 miles. Price: £119,995, £9,000 less than this car. Dealer: FLX Automotive in Enfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-a0910cdec2f9

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 24 miles from this car. Mileage: 26,000 miles. Price: £229,995, £101,000 more than this car. Dealer: Polo Prestige in Sittingbourne. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-347cd29c6b42