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: 47,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 577 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 299 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 47,000 miles on the clock, this 2020 Mercedes-Benz G Class AMG has done roughly 2,100 more miles than a typical 2020 Mercedes-Benz G Class. Its asking price of £129,995 is £6,784 above the AskCar estimate of £123,211. The AskCar estimate uses UK dealer asking prices, including 408 Mercedes-Benz G Class adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 93 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Driven Motor Company, based in Glasgow. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £6,784 (5%) over the AskCar estimate of £123,211.

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 408 priced Mercedes-Benz G Class adverts across different ages and specifications, as of 7 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 7 November 2026.

Time on sale

This 2020 Mercedes-Benz G Class has been on sale for at least 93 days.

Price history

AskCar first saw this advert on 6 August 2026 at £129,995. 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 7 November 2026: valid until 4 August 2027.

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

There were no advisories at the latest test.

Mileage at that test: 47,208 miles, which matches the advertised 47,000 miles.

Advertised mileage is about 2,100 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 7 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 46,600 miles. Price: £116,990, £13,005 less than this car. Dealer: Southport Motor Company in Southport. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-72ae41b24384
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 46,282 miles. Price: £123,950, £6,045 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-940827641202
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 48,700 miles. Price: £122,000, £7,995 less than this car. Dealer: Reverie Autos in Hatfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-3b34005ec48f

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 119 miles from this car. Mileage: 28,403 miles. Price: £134,995, £5,000 more than this car. Dealer: RPM Motors (N.I.) in Belfast. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-3bd6be29b9a1