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: 75,000 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

With 75,000 miles on the clock, this 2020 Mercedes-Benz G Class AMG has done roughly 30,100 more miles than a typical 2020 Mercedes-Benz G Class. Its asking price of £107,949 is £4,695 above the AskCar estimate of £103,254. 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 31 days ago, the asking price has dropped by £1,000. The government's MOT record matches its advertised mileage. It is advertised by A1 Ortos in Oldham. 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: £4,695 (4%) over the AskCar estimate of £103,254.

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 31 days.

Price history

AskCar first saw this advert on 8 October 2026 at £108,949. Its asking price is now £107,949, £1,000 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 8 October 2026: £108,949
• 7 November 2026: £107,949

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 16 July 2027.

It has had 4 MOTs. The latest, on 18 June 2026, passed.

Advisories at the latest test: nearside front tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 73,819 miles, which matches the advertised 75,000 miles.

Advertised mileage is about 30,100 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 £109,894 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: 73,008 miles. Price: £109,894, £1,945 more than this car. Dealer: The Gemini Group in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-c288bc452c9e
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 69,000 miles. Price: £114,995, £7,046 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, £7,046 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, 16 miles from this car. Mileage: 36,295 miles. Price: £121,495, £13,546 more than this car. Dealer: Warford Cars in Altrincham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-9b24530fd930