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: 26,000 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

This 2020 Mercedes-Benz G Class AMG has covered 26,000 miles, around 18,900 fewer miles than is typical for its age. Its asking price of £229,995 is £92,345 above the AskCar estimate of £137,650. The AskCar estimate uses 413 UK dealer adverts for the Mercedes-Benz G Class, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 151 days ago, the asking price has dropped by £20,005. The recorded MOT expired on 30 October 2026, so ask the dealer whether it has been renewed. Its advertised mileage matches the government's MOT record. It is for sale at Polo Prestige in Sittingbourne. 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

Above the going rate: £92,345 (67%) over the AskCar estimate of £137,650.

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 £250,000. Its asking price is now £229,995, £20,005 less. The latest price cut was seen on 16 September 2026.

Price changes recorded:

• 10 June 2026: £250,000
• 15 July 2026: £249,995
• 6 August 2026: £239,995
• 5 September 2026: £245,000
• 16 September 2026: £229,995

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 30 October 2026; ask the dealer for the current MOT.

It has had 3 MOTs. The latest, on 31 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 25,433 miles, which matches the advertised 26,000 miles.

Advertised mileage is about 18,900 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, green. Mileage: 25,000 miles. Price: £127,995, £102,000 less than this car. Dealer: The Motoring Team in Chesham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-1d422cff096f
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 28,403 miles. Price: £134,995, £95,000 less 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, £100,000 less than this car. Dealer: Andreas Prestige in Hillingdon. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-5cdcb0840e2c

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 24 miles from this car. Mileage: 38,000 miles. Price: £128,995, £101,000 less than this car. Dealer: Car Hunters in Steeple. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-61ba6016312c