2020 Mercedes-Benz G Class

4.0 G63 V8 BiTurbo AMG Auto 4WD Euro 6 (s/s) 5dr SpdS+9GT (577 bhp)

£129,995

Fair price: within 8% of the typical £139,880 for this model, age and mileage, drawing on 408 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: G Class
Trim: AMG
Version: 4.0 G63 V8 BiTurbo AMG Auto 4WD Euro 6 (s/s) 5dr SpdS+9GT (577 bhp)
Mileage: 25,000 miles
Year: 2020
Fuel type: Petrol
Body type: SUV
Engine: 4.0 L
Gearbox: Automatic
Power: 577 bhp
Seats: 5
Colour: Green
Doors: 5
Driven wheels: Four Wheel Drive
Engine badge: G63 V8 BiTurbo
Emissions standard: Euro 6

About this car

This 2020 Mercedes-Benz G Class AMG is advertised with 25,000 miles, approximately 20,200 below the typical mileage for its age. Its asking price of £129,995 is £9,885 below our estimate of £139,880. To estimate its market asking price, we analyse UK dealer adverts for 408 Mercedes-Benz G Class cars across different ages and specifications. Since we first spotted the advert 137 days ago, the asking price has dropped by £10,000. That history is worth bearing in mind when speaking to the dealer. The seller is The Motoring Team, based in London.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 10 June 2026, 137 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £10,000 from the first recorded £139,995. 2 price reductions recorded, the latest observed on 30 September 2026.

Recorded asking prices
Date observed	Asking price
10 June 2026	£139,995
1 July 2026	£134,995
14 July 2026	£134,995
30 September 2026	£129,995
23 October 2026	£129,995

Price and mileage comparison

Estimated market asking price: £139,880. The asking price is £9,885 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 20,200 miles lower than typical for a 2020 Mercedes-Benz G Class.

24 other cars with the same year, trim, gearbox and fuel are for sale from £107,894 to £240,000.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£107,894	71,008 miles
£108,949	75,000 miles
£109,990	60,300 miles
£109,995	67,500 miles
£114,995	69,000 miles

These cars have covered 3,506–75,000 miles, compared with 25,000 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 · 2020 Mercedes-Benz G Class price guide

Vehicle photos

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