2021 Mercedes-Benz G Class 2.9 G400d AMG Line Premium Plus

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: 35,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.9 litres, 325 bhp
• Gearbox: Automatic (G-Tronic)
• Drive: Four-wheel drive
• Colour: Green
• CO2: 289 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz G Class AMG Line Premium Plus has covered 35,000 miles. Priced at £104,990, it is advertised £2,573 above the AskCar estimate of £102,417. To work out the AskCar estimate, we analyse UK dealer adverts for 413 Mercedes-Benz G Class cars across different ages and specifications. We first saw this car advertised 86 days ago. Its asking price has since fallen by £5,000. The government's MOT record matches its advertised mileage. You can find this car at Manor Classic Cars in York. 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: £2,573 (2%) over the AskCar estimate of £102,417.

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 86 days.

Price history

AskCar first saw this advert on 14 August 2026 at £109,990. Its asking price is now £104,990, £5,000 less. The latest price cut was seen on 4 October 2026.

Price changes recorded:

• 14 August 2026: £109,990
• 4 October 2026: £104,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 18 January 2027.

It has had 3 MOTs. The latest, on 19 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 32,902 miles, which matches the advertised 35,000 miles.

Advertised mileage is about 1,000 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 £99,900 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, £4,995 less 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, white. Mileage: 19,641 miles. Price: £99,900, £5,090 less than this car. Dealer: Apex Performance Centre in Loughborough. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-317c55425c28
• 2021 Mercedes-Benz G Class AMG Line Premium Plus, 2.9 diesel SUV, black. Mileage: 73,000 miles. Price: £105,000, the same price as this car. Dealer: Signature Car Group in Rochford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2021-8c8b30bc6261