Used Mercedes-Benz GLS for sale near Luton
There are 9 used Mercedes-Benz GLS for sale from UK dealers within 20 miles of Luton on AskCar, as of 11 November 2026. The cheapest is £28,989. AskCar lists 145 used Mercedes-Benz GLS across the UK, from 113 dealerships.
As of 11 November 2026, AskCar lists 593,449 cars and vans from 12,847 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
Price reductions near Luton
5 of the 9 Mercedes-Benz GLS within 20 miles of Luton had their price reduced in the last 14 days to 11 November 2026. Each one's line in the list below says by how much.
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 139 priced Mercedes-Benz GLS adverts on AskCar as of 11 November 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, town and distance; AskCar page.
Cheaper cars like each one, with its price history, are on its AskCar page.
- 2022 Mercedes-Benz GLS 2.9 GLS400d Night Edition, 325 bhp, automatic, diesel, SUV, 5 doors, 7 seats, blue. Mileage: 17,897 miles. Price: £54,950, reduced by £5,000 from £59,950 since AskCar first saw it on 16 September 2026, 56 days ago. Good value: £5,758 (9%) under the AskCar estimate of £60,708. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 19 October 2026; ask the dealer for the current MOT. Dealer: Group 1 Automotive Mercedes-Benz of Hertford in Hertford, 17 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2022-855c016af91b
- 2025 Mercedes-Benz GLS 3.0 GLS450h MHEV AMG Line Premium Plus, 396 bhp, automatic, petrol, SUV, 5 doors, 7 seats, white. Mileage: 4,500 miles. Price: £76,500, reduced by £9,500 from £86,000 since AskCar first saw it on 20 July 2026, 114 days ago. Fair price: £3,542 (4%) under the AskCar estimate of £80,042. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Sytner Group Mercedes-Benz of Watford in Watford, 17 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2025-269ac410971c
- 2024 Mercedes-Benz GLS 3.0 GLS450dh MHEV AMG Line Premium Plus, 382 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 17,000 miles. Price: £64,995, reduced by £11,955 from £76,950 since AskCar first saw it on 28 May 2026, 167 days ago. Fair price: £1,220 (1%) under the AskCar estimate of £66,215. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: S M Specialist Cars in Bedford, 18 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2024-a0670ade7d0f
- 2019 Mercedes-Benz GLS 2.9 GLS400d AMG Line Premium Plus Executive, 325 bhp, automatic, diesel, SUV, 5 doors, 7 seats, grey. Mileage: 82,000 miles. Price: £39,995, reduced by £6,000 from £45,995 since AskCar first saw it on 10 June 2026, 154 days ago. Fair price: £62 (under 1%) under the AskCar estimate of £40,057. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 7 May 2027. Dealer: AH Specialist Cars in Watford, 17 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2019-e9d276a5bb25
- 2018 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, white. Mileage: 68,750 miles. Price: £28,989, reduced by £1,000 from £29,989 since AskCar first saw it on 2 September 2026, 70 days ago. Fair price: £413 (1%) over the AskCar estimate of £28,576. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 2 February 2027. Dealer: A6 Motors in Luton, 6 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-c1d4836b79e9
- 2019 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, white. Mileage: 67,300 miles. Price: £31,489, reduced by £2,000 from £33,489 since AskCar first saw it on 29 August 2026, 74 days ago. Fair price: £1,059 (3%) over the AskCar estimate of £30,430. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 13 August 2027. Dealer: A6 Motors in Luton, 6 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2019-1154e178e5a8
- 2021 Mercedes-Benz GLS 2.9 GLS400d AMG Line Night Edition Executive, 325 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 56,110 miles. Price: £49,989, reduced by £1,500 from £51,489 since AskCar first saw it on 28 September 2026, 44 days ago. Fair price: £1,812 (3%) over the AskCar estimate of £48,177. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 3 December 2026. Dealer: A6 Motors in Luton, 6 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2021-8c67e2c3a0bd
- 2019 Mercedes-Benz GLS 3.0 GLS350d V6 Grand Edition, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 84,553 miles. Price: £32,999, unchanged since AskCar first saw it on 22 October 2026, 20 days ago. Fair price: £2,088 (6%) over the AskCar estimate of £30,911. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 12 May 2027. Dealer: SCS Autos in Watford, 17 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2019-9bae9c9283d4
- 2017 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, white. Mileage: 63,000 miles. Price: £49,994, unchanged since AskCar first saw it on 28 May 2026, 167 days ago. Above the going rate: £21,787 (77%) over the AskCar estimate of £28,207. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 9 July 2026; ask the dealer for the current MOT. Dealer: RJD Commercials in Sandy, 18 miles from Luton. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2017-bff46ff56fab
Mercedes-Benz GLS across the UK by price
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