2021 Mercedes-Benz G Class 4.0 AMG
Price: £133,995. Good value: £12,230 (8%) under the AskCar estimate of £146,225, our expected asking price for this car from its model, age, mileage and specification, drawing on 399 priced Mercedes-Benz G Class adverts on AskCar as of 2 November 2026.
AskCar lists 464 used Mercedes-Benz G Class from 276 UK dealerships, as of 2 November 2026.
Overview
- Make: Mercedes-Benz
- Model: G Class
- Trim: AMG
- Version: 4.0 AMG Auto 4WD Euro 6 5dr (577 bhp)
- Year: 2021
- Mileage: 30,000 miles
- Fuel: Petrol
- Body: SUV, 5 doors, 5 seats
- Engine: 4.0 litres, 577 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Grey
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 Mercedes-Benz G Class AMG is advertised with 30,000 miles, approximately 6,000 below the typical mileage for its age. Priced at £133,995, it is advertised £12,230 below the AskCar estimate of £146,225. The AskCar estimate draws on 399 Mercedes-Benz G Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. The seller is Andreas Prestige, based in Slough. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Good value: £12,230 (8%) under the AskCar estimate of £146,225.
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 399 priced Mercedes-Benz G Class adverts across different ages and specifications, as of 2 November 2026.
A 2021 Mercedes-Benz G Class with the 4.0 petrol engine is typically advertised at £137,000: the median of the 27 for sale on AskCar, as of 2 November 2026.
Time on sale
AskCar first saw this 2021 Mercedes-Benz G Class advertised today.
Price history
AskCar first saw this advert on 2 November 2026 at £133,995. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 6,000 miles lower than the median mileage of a 2021 Mercedes-Benz G Class on AskCar.
Similar cars
17 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 2 November 2026.
The 3 closest to this car in mileage:
- 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 30,000 miles. Price: £143,995, £10,000 more than this car. Dealer: Sedgley Group in Prestwich. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-37c2c15100ef
- 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 34,101 miles. Price: £138,995, £5,000 more than this car. Dealer: Aim Autos in Tockwith. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-947861f33125
- 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 25,000 miles. Price: £169,995, £36,000 more than this car. Dealer: My Next Car in Sandy. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-5d23a6ab20cd
- The nearest: 2021 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black, 8 miles from this car. Mileage: 36,000 miles. Price: £129,995, £4,000 less than this car. Dealer: First Autos in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-ef618097de07
Browse all Mercedes-Benz G Class cars for sale · 2021 Mercedes-Benz G Class price guide
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As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.