2020 Mercedes-Benz GLS 2.9 GLS400d AMG Line Premium Plus Executive

Overview

• Make: Mercedes-Benz
• Model: GLS
• Trim: AMG Line Premium Plus Executive
• Version: 2.9 GLS400d AMG Line AMG Line Premium Plus Executive G-Tronic 4WD Euro 6 (s/s) 5dr (Premium Plus, Executive) (325 bhp)
• Year: 2020
• Mileage: 54,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.9 litres, 325 bhp
• Gearbox: Automatic (G-Tronic)
• Drive: Four-wheel drive
• Colour: Red
• CO2: 246 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 54,000 miles, this 2020 Mercedes-Benz GLS AMG Line Premium Plus Executive has covered about 6,600 fewer miles than other 2020 Mercedes-Benz GLS cars. Priced at £47,990, it is advertised £1,837 below the AskCar estimate of £49,827. To work out the AskCar estimate, we analyse UK dealer adverts for 143 Mercedes-Benz GLS cars across different ages and specifications. We have tracked this advert for 29 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by LTV in Bury. 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: £1,837 (3%) under the AskCar estimate of £49,827.

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 143 priced Mercedes-Benz GLS adverts across different ages and specifications, as of 8 November 2026.

A 2020 Mercedes-Benz GLS with the 2.9 diesel engine is typically advertised at £45,400: the median of the 12 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2020 Mercedes-Benz GLS has been on sale for at least 29 days.

Price history

AskCar first saw this advert on 10 October 2026 at £47,990. 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 11 October 2027.

It has had 6 MOTs. The latest, on 12 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,852 miles, which matches the advertised 54,000 miles.

Advertised mileage is about 6,600 miles lower than the median mileage of a 2020 Mercedes-Benz GLS on AskCar.

Similar cars

1 other 2020 Mercedes-Benz GLS AMG Line Premium Plus Executive 2.9 diesel automatic SUV is for sale at UK dealers, as of 8 November 2026.

The closest to this car in mileage:

• 2020 Mercedes-Benz GLS AMG Line Premium Plus Executive, 2.9 diesel SUV, blue. Mileage: 82,000 miles. Price: £43,840, £4,150 less than this car. Dealer: Oakdene Collection in Alfreton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2020-8c13be78dd41