2020 Mercedes-Benz G Class 4.0 G63 V8 BiTurbo AMG

Overview

• Make: Mercedes-Benz
• Model: G Class
• Trim: AMG
• Version: 4.0 AMG Auto 4WD Euro 6 5dr (577 bhp)
• Year: 2020
• Mileage: 51,600 miles
• Fuel: Petrol
• Body: SUV, 5 doors
• 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 is advertised with 51,600 miles, approximately 6,700 above the typical mileage for its age. Priced at £124,975, it is advertised £6,890 above the AskCar estimate of £118,085. The AskCar estimate uses UK dealer asking prices, including 413 Mercedes-Benz G Class adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 86 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Kaaimans International 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: £6,890 (5%) over the AskCar estimate of £118,085.

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 86 days.

Price history

AskCar first saw this advert on 14 August 2026 at £124,975. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 15 December 2026.

It has had 6 MOTs. The latest, on 16 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 46,432 miles, which matches the advertised 51,600 miles.

Advertised mileage is about 6,700 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: 52,000 miles. Price: £117,990, £6,985 less than this car. Dealer: Per4mance Cars in Macclesfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-b27b7487607f
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, green. Mileage: 51,100 miles. Price: £135,000, £10,025 more than this car. Dealer: Specialist Cars Kingswinford in Kingswinford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-25d231789664
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, grey. Mileage: 49,000 miles. Price: £119,995, £4,980 less than this car. Dealer: Carderi Motors in Wembley. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-bd9ac6bb8138

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 6 miles from this car. Mileage: 73,008 miles. Price: £109,894, £15,081 less than this car. Dealer: The Gemini Group in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-c288bc452c9e