2021 Mercedes-Benz G Class 2.9 G400d AMG Line Premium Plus
Price: £99,900. Good value: £10,156 (9%) under the AskCar estimate of £110,056, 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 Line Premium Plus
- Version: 2.9 G400d AMG Line Premium Plus G-Tronic 4WD Euro 6 (s/s) 5dr (325 bhp)
- Year: 2021
- Mileage: 19,641 miles
- Fuel: Diesel
- Body: SUV, 5 doors, 5 seats
- Engine: 2.9 litres, 325 bhp
- Gearbox: Automatic (G-Tronic)
- Drive: Four-wheel drive
- Colour: White
- CO2: 289 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 Mercedes-Benz G Class AMG Line Premium Plus is advertised with 19,641 miles, approximately 16,400 below the typical mileage for its age. The AskCar estimate for this car is £110,056. It is priced at £99,900, which is £10,156 below that estimate. The AskCar estimate draws on 413 Mercedes-Benz G Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 96 days ago. You can find this car at Apex Performance Centre in Loughborough. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 8 November 2026.
Price
Good value: £10,156 (9%) under the AskCar estimate of £110,056.
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 2.9 diesel engine is typically advertised at £100,900: the median of the 12 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 96 days.
Price history
AskCar first saw this advert on 4 August 2026 at £99,900. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 16,400 miles lower than the median mileage of a 2021 Mercedes-Benz G Class on AskCar.
Similar cars
3 other 2021 Mercedes-Benz G Class AMG Line Premium Plus 2.9 diesel automatic SUVs are for sale at UK dealers, from £99,995 to £105,000, as of 8 November 2026.
The 3 closest to this car in mileage:
- 2021 Mercedes-Benz G Class AMG Line Premium Plus, 2.9 diesel SUV, white. Mileage: 20,000 miles. Price: £99,995, £95 more than this car. Dealer: M.W. Trade Cars in Dudley. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-44788d145c2c
- 2021 Mercedes-Benz G Class AMG Line Premium Plus, 2.9 diesel SUV, green. Mileage: 35,000 miles. Price: £104,990, £5,090 more than this car. Dealer: Manor Classic Cars in York. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-394fc3f62308
- 2021 Mercedes-Benz G Class AMG Line Premium Plus, 2.9 diesel SUV, black. Mileage: 73,000 miles. Price: £105,000, £5,100 more than this car. Dealer: Signature Car Group in Rochford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-8c8b30bc6261
Browse all Mercedes-Benz G Class cars for sale · 2021 Mercedes-Benz G Class price guide
More like this
- Used Mercedes-Benz G Class AMG Line Premium Plus prices
- Used diesel Mercedes-Benz G Class for sale
- Used Mercedes-Benz G Class for sale near Loughborough
Photos
1 photo of this car is 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.