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: 68,200 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 576 bhp
• Gearbox: Automatic (9G-Tronic)
• Drive: Four-wheel drive
• Colour: Silver
• CO2: 369 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 68,200 miles, this 2021 Mercedes-Benz G Class AMG has covered about 32,200 more miles than other 2021 Mercedes-Benz G Class cars. Priced at £114,995, it is advertised £142 above the AskCar estimate of £114,853. 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 138 days ago. Its asking price has since fallen by £4,000. Our latest MOT record expired on 14 October 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Motorvana in Manchester. 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: £142 (under 1%) over the AskCar estimate of £114,853.

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 138 days.

Price history

AskCar first saw this advert on 23 June 2026 at £118,995. Its asking price is now £114,995, £4,000 less. The latest price cut was seen on 16 September 2026.

Price changes recorded:

• 23 June 2026: £118,995
• 30 June 2026: £114,995
• 27 July 2026: £113,995
• 8 August 2026: £114,995
• 22 August 2026: £120,995
• 4 September 2026: £118,995
• 12 September 2026: £115,995
• 16 September 2026: £114,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: the latest record we hold ran out on 14 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 15 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 67,219 miles, which matches the advertised 68,200 miles.

Advertised mileage is about 32,200 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, £7,000 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, black. Mileage: 70,000 miles. Price: £124,995, £10,000 more than this car. Dealer: The Motoring Team in Chesham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-d21e7bb5c073
• 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 65,600 miles. Price: £115,990, £995 more than this car. Dealer: 51 X in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-3afb1ad52c7c

• The nearest: 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 4 miles from this car. Mileage: 61,500 miles. Price: £118,995, £4,000 more than this car. Dealer: CC Cars in Dukinfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-4c1f1fbf5c06