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: 52,000 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 52,000 miles on the clock, this 2020 Mercedes-Benz G Class AMG has done roughly 7,100 more miles than a typical 2020 Mercedes-Benz G Class. The AskCar estimate for this car is £120,061. It is priced at £117,990, which is £2,071 below that estimate. The AskCar estimate uses 413 UK dealer adverts for the Mercedes-Benz G Class, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 32 days ago. Its asking price has since fallen by £2,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Per4mance Cars in Macclesfield. 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: £2,071 (1%) under the AskCar estimate of £120,061.

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 32 days.

Price history

AskCar first saw this advert on 7 October 2026 at £119,990. Its asking price is now £117,990, £2,000 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 7 October 2026: £119,990
• 16 October 2026: £118,990
• 7 November 2026: £117,990

Mileage and MOT

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

It has had 4 MOTs. The latest, on 5 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 51,764 miles, which matches the advertised 52,000 miles.

Advertised mileage is about 7,100 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: 51,600 miles. Price: £124,975, £6,985 more than this car. Dealer: Kaaimans International in Nottingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-7de0cc1f5412
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, green. Mileage: 51,100 miles. Price: £135,000, £17,010 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, £2,005 more 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, 8 miles from this car. Mileage: 36,295 miles. Price: £121,495, £3,505 more than this car. Dealer: Warford Cars in Altrincham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-9b24530fd930