2021 Mercedes-Benz G Class

2.9 G400d AMG Line Premium Auto 4WD Euro 6 5dr (325 bhp)

£92,999

Fair price: within 8% of the typical £99,904 for this model, age and mileage, drawing on 408 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: G Class
Trim: AMG LINE PREMIUM
Version: 2.9 G400d AMG Line Premium Auto 4WD Euro 6 5dr (325 bhp)
Mileage: 55,000 miles
Year: 2021
Fuel type: Diesel
Body type: SUV
Engine: 2.9 L
Gearbox: Automatic
Power: 325 bhp
Seats: 5
CO2: 281 g/km
Colour: Black
Doors: 5
Driven wheels: Four Wheel Drive
Engine badge: G400d
Emissions standard: Euro 6

About this car

This 2021 Mercedes-Benz G Class AMG Line Premium is advertised with 55,000 miles, approximately 18,900 above the typical mileage for its age. Our estimated market asking price is £99,904. This car is advertised at £92,999, which is £6,905 below that figure. To estimate its market asking price, we analyse UK dealer adverts for 408 Mercedes-Benz G Class cars across different ages and specifications. We first saw this car advertised 151 days ago. Its asking price has since fallen by £2,996. The recorded MOT expired on 14 July 2026, so ask the dealer whether it has been renewed. Our comparison with the latest MOT reading has not flagged a mileage discrepancy. You can find this car at Waterways Prestige in Leighton Buzzard.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 151 days ago. Advert duration calculated on 26 October 2026. Net asking-price reduction: £2,996 from the first recorded £95,995. 2 price reductions recorded, the latest observed on 15 September 2026.

Recorded asking prices
Date observed	Asking price
28 May 2026	£95,995
19 June 2026	£93,995
14 July 2026	£93,995
15 September 2026	£92,999
23 October 2026	£92,999

Price and mileage comparison

Estimated market asking price: £99,904. The asking price is £6,905 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 408 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 18,900 miles higher than typical for a 2021 Mercedes-Benz G Class.

The advertised mileage is consistent with the last MOT reading.

The recorded MOT has expired; ask the dealer for an up-to-date MOT.

MOT

MOT valid until 14 July 2026. 46,560 miles at the last test.

8 other cars with the same year, trim, gearbox and fuel are for sale from £74,995 to £124,995.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£74,995	102,000 miles
£87,989	66,000 miles
£89,948	58,000 miles
£89,990	66,552 miles
£96,500	50,429 miles

These cars have covered 36,743–102,000 miles, compared with 55,000 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Mercedes-Benz G Class cars for sale · 2021 Mercedes-Benz G Class price guide

Vehicle photos

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