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: 73,008 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 577 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 299 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 73,008 miles, this 2020 Mercedes-Benz G Class AMG has covered about 28,100 more miles than other 2020 Mercedes-Benz G Class cars. Its asking price of £109,894 is £5,157 above the AskCar estimate of £104,737. To work out the AskCar estimate, we analyse UK dealer adverts for 413 Mercedes-Benz G Class cars across different ages and specifications. We first saw this car advertised 102 days ago. Its asking price has since fallen by £6,565. The recorded MOT expired on 17 September 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at The Gemini Group in Nottingham. 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: £5,157 (4%) over the AskCar estimate of £104,737.

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 102 days.

Price history

AskCar first saw this advert on 29 July 2026 at £116,459. Its asking price is now £109,894, £6,565 less. The latest price cut was seen on 17 October 2026.

Price changes recorded:

• 29 July 2026: £116,459
• 4 August 2026: £111,459
• 7 September 2026: £107,894
• 11 September 2026: £109,894
• 7 October 2026: £112,894
• 17 October 2026: £107,894
• 28 October 2026: £109,894

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: the latest record we hold ran out on 17 September 2026; ask the dealer for the current MOT.

It has had 3 MOTs. The latest, on 16 September 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 51,809 miles, which matches the advertised 73,008 miles.

Advertised mileage is about 28,100 miles higher 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: 75,000 miles. Price: £107,949, £1,945 less than this car. Dealer: A1 Ortos in Oldham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-880d642b56ae
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 69,000 miles. Price: £114,995, £5,101 more than this car. Dealer: Harentor Cars in St Albans. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-22db036e53e5
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 64,595 miles. Price: £114,995, £5,101 more than this car. Dealer: MH Performance in Bradford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-e12513f7f586

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 6 miles from this car. Mileage: 51,600 miles. Price: £124,975, £15,081 more than this car. Dealer: Kaaimans International in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-7de0cc1f5412