2020 Mercedes-Benz G Class 4.0 G63 V8 BiTurbo AMG

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)
• Year: 2020
• Mileage: 60,300 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 4.0 litres, 577 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 299 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz G Class AMG has covered 60,300 miles. The dealer is asking £109,990, which is £4,722 below the AskCar estimate of £114,712. 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 recorded this car for sale 21 days ago. The last MOT shows 61,405 miles, more than the advert. This is worth checking with the dealer. Its MOT is recorded as valid until 18 August 2027. It is for sale at Halesowen Trade Centre in Birmingham. 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: £4,722 (4%) under the AskCar estimate of £114,712.

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 2020 Mercedes-Benz G Class with the 4.0 petrol engine is typically advertised at £125,000: the median of the 31 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2020 Mercedes-Benz G Class has been on sale for at least 21 days.

Price history

AskCar first saw this advert on 18 October 2026 at £109,990. Its asking price has not changed.

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 August 2027.

It has had 4 MOTs. The latest, on 18 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 61,405 miles. The advert says 60,300 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 15,400 miles higher than the median mileage of a 2020 Mercedes-Benz G Class on AskCar.

Similar cars

26 other 2020 Mercedes-Benz G Class AMG 4.0 petrol automatic SUVs are for sale at UK dealers, from £107,949 to £240,000, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 64,595 miles. Price: £114,995, £5,005 more than this car. Dealer: MH Performance in Bradford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-e12513f7f586
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, black. Mileage: 55,100 miles. Price: £122,990, £13,000 more than this car. Dealer: Noya Motor Group in Peterborough. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-4483ffededa8
• 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, grey. Mileage: 55,059 miles. Price: £114,900, £4,910 more than this car. Dealer: Baytree Cars in Derby. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-a3eeb5f67dd4

• The nearest: 2020 Mercedes-Benz G Class AMG, 4.0 petrol SUV, green, 12 miles from this car. Mileage: 51,100 miles. Price: £135,000, £25,010 more than this car. Dealer: Specialist Cars Kingswinford in Kingswinford. AskCar page: https://askcar.co.uk/car/mercedes-benz-g-class-2020-25d231789664