2020 Mercedes-Benz G Class 4.0 AMG
Price: £135,000. Above the going rate: £16,594 (14%) over the AskCar estimate of £118,406, our expected asking price for this car from its model, age, mileage and specification, drawing on 413 priced Mercedes-Benz G Class adverts on AskCar as of 8 November 2026.
AskCar lists 480 used Mercedes-Benz G Class from 282 UK dealerships, as of 8 November 2026.
Overview
- Make: Mercedes-Benz
- Model: G Class
- Trim: AMG
- Version: 4.0 AMG Auto 4WD Euro 6 5dr (577 bhp)
- Year: 2020
- Mileage: 51,100 miles
- Fuel: Petrol
- Body: SUV, 5 doors, 5 seats
- Engine: 4.0 litres, 577 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Green
- Emissions standard: Euro 6, ULEZ compliant
About this car
At 51,100 miles, this 2020 Mercedes-Benz G Class AMG has covered about 6,200 more miles than other 2020 Mercedes-Benz G Class cars. The dealer is asking £135,000, which is £16,594 above the AskCar estimate of £118,406. To work out the AskCar estimate, we analyse UK dealer adverts for 413 Mercedes-Benz G Class cars across different ages and specifications. We have tracked this advert for 110 days. The seller is Specialist Cars Kingswinford, based in Kingswinford. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 8 November 2026.
Price
Above the going rate: £16,594 (14%) over the AskCar estimate of £118,406.
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 110 days.
Price history
AskCar first saw this advert on 21 July 2026 at £135,000. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 6,200 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, £10,025 less 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, black. Mileage: 52,000 miles. Price: £117,990, £17,010 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, grey. Mileage: 49,000 miles. Price: £119,995, £15,005 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, 12 miles from this car. Mileage: 60,300 miles. Price: £109,990, £25,010 less than this car. Dealer: Halesowen Trade Centre in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-d88c108f2d0d
Browse all Mercedes-Benz G Class cars for sale · 2020 Mercedes-Benz G Class price guide
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Photos
2 photos of this car are on its AskCar page.
As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.