2020 Mercedes-Benz G Class 4.0 AMG

Overview

• Make: Mercedes-Benz
• Model: G Class
• Trim: AMG
• Version: 4.0 AMG Auto 4WD Euro 6 5dr (576 bhp)
• Year: 2020
• Mileage: 49,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 576 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 344 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz G Class AMG has covered 49,000 miles, around 4,100 more miles than is typical for its age. Priced at £119,995, it is advertised £1,064 above the AskCar estimate of £118,931. To work out the AskCar estimate, we analyse UK dealer adverts for 413 Mercedes-Benz G Class cars across different ages and specifications. We first recorded this advert 71 days ago, and its asking price has since fallen by £9,955. Its advertised mileage matches the government's MOT record. It is advertised by Carderi Motors in Wembley. 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: £1,064 (under 1%) over the AskCar estimate of £118,931.

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 71 days.

Price history

AskCar first saw this advert on 29 August 2026 at £129,950. Its asking price is now £119,995, £9,955 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 29 August 2026: £129,950
• 9 September 2026: £129,000
• 29 September 2026: £128,900
• 5 October 2026: £128,100
• 6 October 2026: £127,900
• 13 October 2026: £124,900
• 31 October 2026: £122,900
• 5 November 2026: £119,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 28 May 2027.

It has had 3 MOTs. The latest, on 29 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 48,967 miles, which matches the advertised 49,000 miles.

Advertised mileage is about 4,100 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: 48,700 miles. Price: £122,000, £2,005 more than this car. Dealer: Reverie Autos in Hatfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-3b34005ec48f
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, silver. Mileage: 47,000 miles. Price: £129,995, £10,000 more than this car. Dealer: Driven Motor Company in Glasgow. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-99e5e65e91dc
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, green. Mileage: 51,100 miles. Price: £135,000, £15,005 more than this car. Dealer: Specialist Cars Kingswinford in Kingswinford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-25d231789664

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 1 miles from this car. Mileage: 3,506 miles. Price: £240,000, £120,005 more than this car. Dealer: Berkeley Motor Group in Greenford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-9e4575f4983e