Used Mercedes-Benz GLS for sale under £30,000
21 cars from UK dealers, updated 23 October 2026. Typical asking price £27,000. Half of them are priced between £25,000 and £29,000.
AskCar lists 589,789 cars from 13,079 UK dealer locations, read and updated daily from dealer websites. More than any other UK site. No dealer pays to be listed.
8 have had their price cut since they were first listed.
Cars for sale now
The cheaper cars like each one are on its AskCar page.
- 2017 Mercedes-Benz GLS, 65,000 miles, £25,000, £3,338 under typical, Colchester
- 2018 Mercedes-Benz GLS, 74,550 miles, £27,495, £2,878 under typical, Maidstone
- 2016 Mercedes-Benz GLS, 75,954 miles, £20,999, £1,925 under typical, Hillingdon
- 2018 Mercedes-Benz GLS, 59,000 miles, £28,495, Farnham
- 2018 Mercedes-Benz GLS, 47,220 miles, £29,499, Manchester
- 2017 Mercedes-Benz GLS, 64,000 miles, £26,990, Manchester
- 2017 Mercedes-Benz GLS, 56,700 miles, £28,500, Poole
- 2019 Mercedes-Benz GLS, 66,000 miles, £29,999, Durham
- 2016 Mercedes-Benz GLS, 82,642 miles, £19,990, Flimwell
- 2018 Mercedes-Benz GLS, 57,794 miles, £29,990, Sheffield
- 2017 Mercedes-Benz GLS, 55,000 miles, £29,480, Alfreton
- 2017 Mercedes-Benz GLS, 68,862 miles, £26,995, Manchester
- 2018 Mercedes-Benz GLS, 62,450 miles, £29,790, Hoddesdon
- 2018 Mercedes-Benz GLS, 68,750 miles, £28,989, Luton
- 2018 Mercedes-Benz GLS, 85,531 miles, £26,100, Barnet
- 2018 Mercedes-Benz GLS, 110,000 miles, £26,990, Hillingdon
- 2017 Mercedes-Benz GLS, 89,000 miles, £25,080, Leicester
- 2016 Mercedes-Benz GLS, 51,000 miles, £28,995, Southampton
- 2018 Mercedes-Benz GLS, 108,190 miles, £23,500, Ellesmere Port
- 2016 Mercedes-Benz GLS, 167,000 miles, £16,290, Wolverhampton
- 2016 Mercedes-Benz GLS, £20,995
Mercedes-Benz GLS by gearbox, fuel and body
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