Used petrol Mercedes-Benz GLS for sale

There are 20 used petrol Mercedes-Benz GLS for sale from UK dealers on AskCar, as of 29 October 2026. Typical asking price £86,500 (the median: half cost less, half cost more). The cheapest is £33,490. AskCar lists 130 used Mercedes-Benz GLS across the UK, from 105 dealerships.

The middle half of the 20 cars are priced between £70,500 and £92,000.

As of 29 October 2026, AskCar lists 587,923 cars and vans from 12,992 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

What does a used petrol Mercedes-Benz GLS cost?

The median asking price is £86,500, across the 20 cars for sale with a price.

10 of the 20 cars had their price reduced in the last 14 days to 29 October 2026.

Cars for sale now

Best value first: the cars priced furthest below their AskCar estimate come first, and those without one come after. The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 125 priced Mercedes-Benz GLS adverts on AskCar as of 29 October 2026.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page.

Cheaper cars like each one, with its price history, are on its AskCar page.

Mercedes-Benz GLS by gearbox, fuel and body

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