2023 Mercedes-Benz GLS 2.9 GLS400d Night Edition

Price: £51,980. Fair price: £1,701 (3%) under the AskCar estimate of £53,681, our expected asking price for this car from its model, age, mileage and specification, drawing on 143 priced Mercedes-Benz GLS adverts on AskCar as of 8 November 2026.

AskCar lists 150 used Mercedes-Benz GLS from 116 UK dealerships, as of 8 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: GLS
  • Trim: Night Edition
  • Version: 2.9 GLS400d Night Edition G-Tronic 4WD Euro 6 (s/s) 5dr (325 bhp)
  • Year: 2023
  • Mileage: 45,000 miles
  • Fuel: Diesel
  • Body: SUV, 5 doors, 7 seats
  • Engine: 2.9 litres, 325 bhp
  • Gearbox: Automatic (G-Tronic)
  • Drive: Four-wheel drive
  • Colour: Grey
  • CO2: 229 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

With 45,000 miles on the clock, this 2023 Mercedes-Benz GLS Night Edition has done roughly 14,400 more miles than a typical 2023 Mercedes-Benz GLS. Its asking price of £51,980 is £1,701 below the AskCar estimate of £53,681. The AskCar estimate uses UK dealer asking prices, including 143 Mercedes-Benz GLS adverts, and accounts for the car’s age, mileage and specification. We first recorded this advert 39 days ago, and its asking price has since fallen by £2,500. It is advertised by Auto100.Co.Uk in Sutton-in-Ashfield. 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: £1,701 (3%) under the AskCar estimate of £53,681.

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.

Time on sale

This 2023 Mercedes-Benz GLS has been on sale for at least 39 days.

Price history

AskCar first saw this advert on 30 September 2026 at £54,480. Its asking price is now £51,980, £2,500 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

  • 30 September 2026: £54,480
  • 6 October 2026: £53,980
  • 12 October 2026: £53,480
  • 18 October 2026: £52,980
  • 24 October 2026: £52,480
  • 3 November 2026: £51,980

Mileage and MOT

Advertised mileage is about 14,400 miles higher than the median mileage of a 2023 Mercedes-Benz GLS on AskCar.

Similar cars

4 other 2023 Mercedes-Benz GLS Night Edition 2.9 diesel automatic SUVs are for sale at UK dealers, from £50,599 to £59,195, as of 8 November 2026.

The 3 closest to this car in mileage:

  • 2023 Mercedes-Benz GLS Night Edition, 2.9 diesel SUV, grey. Mileage: 52,442 miles. Price: £50,599, £1,381 less than this car. Dealer: Lookers Mercedes-Benz of Eastbourne in Eastbourne. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2023-d08881a3193f
  • 2023 Mercedes-Benz GLS Night Edition, 2.9 diesel SUV, grey. Mileage: 36,270 miles. Price: £56,579, £4,599 more than this car. Dealer: cinch in Chichester. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2023-61133a0fdfb3
  • 2023 Mercedes-Benz GLS Night Edition, 2.9 diesel SUV, blue. Mileage: 28,500 miles. Price: £59,195, £7,215 more than this car. Dealer: Sandown Group Mercedes-Benz of Epsom in Epsom. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2023-2fbaee3648b2
  • The nearest: 2023 Mercedes-Benz GLS Night Edition, 2.9 diesel SUV, grey, 123 miles from this car. Mileage: 23,173 miles. Price: £57,750, £5,770 more than this car. Dealer: Sytner Group Mercedes-Benz of Bristol in Bristol. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2023-5fab6de682a1

Browse all Mercedes-Benz GLS cars for sale · 2023 Mercedes-Benz GLS price guide

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Photos

51 photos of this car are on its AskCar page.

As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.