2021 Mercedes-Benz G Class 4.0 AMG

Overview

• Make: Mercedes-Benz
• Model: G Class
• Trim: AMG
• Version: 4.0 G 63 AMG 9G-Tronic 4WD Euro 6 5dr Speedshift Plus (576 bhp)
• Year: 2021
• Mileage: 65,600 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 576 bhp
• Gearbox: Automatic (9G-Tronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 369 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 65,600 miles, this 2021 Mercedes-Benz G Class AMG has covered about 29,600 more miles than other 2021 Mercedes-Benz G Class cars. Priced at £115,990, it is advertised £1,021 below the AskCar estimate of £117,011. 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 68 days ago. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at 51 X in Birmingham. 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: £1,021 (under 1%) under the AskCar estimate of £117,011.

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 2021 Mercedes-Benz G Class with the 4.0 petrol engine is typically advertised at £136,200: the median of the 30 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 Mercedes-Benz G Class has been on sale for at least 68 days.

Price history

AskCar first saw this advert on 1 September 2026 at £115,990. Its asking price has not changed.

Price changes recorded:

• 1 September 2026: £115,990
• 15 September 2026: £120,000
• 27 September 2026: £115,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 27 August 2027.

It has had 4 MOTs. The latest, on 28 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 65,574 miles, which matches the advertised 65,600 miles.

Advertised mileage is about 29,600 miles higher than the median mileage of a 2021 Mercedes-Benz G Class on AskCar.

Similar cars

19 other 2021 Mercedes-Benz G Class AMG 4.0 petrol automatic SUVs are for sale at UK dealers, from £83,991 to £179,995, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 68,000 miles. Price: £121,995, £6,005 more than this car. Dealer: CarPlex in Hailsham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-af0eb0d323e5
• 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, silver. Mileage: 68,200 miles. Price: £114,995, £995 less than this car. Dealer: Motorvana in Manchester. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-958eb232ea89
• 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 61,500 miles. Price: £118,995, £3,005 more than this car. Dealer: CC Cars in Dukinfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-4c1f1fbf5c06

• The nearest: 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 9 miles from this car. Mileage: 13,991 miles. Price: £83,991, £31,999 less than this car. Dealer: ASM (uk) in Redditch. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-98e081a244c6