Used Mercedes-Benz GLS for sale near Basildon
There are 17 used Mercedes-Benz GLS for sale from UK dealers within 20 miles of Basildon on AskCar, as of 10 November 2026. Typical asking price £60,500 (the median: half cost less, half cost more). The cheapest is £29,995. AskCar lists 148 used Mercedes-Benz GLS across the UK, from 113 dealerships.
The middle half of the 17 cars are priced between £31,000 and £73,500.
As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
Price reductions near Basildon
5 of the 17 Mercedes-Benz GLS within 20 miles of Basildon had their price reduced in the last 14 days to 10 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 142 priced Mercedes-Benz GLS adverts on AskCar as of 10 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.
- 2019 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, white. Mileage: 55,162 miles. Price: £29,995, unchanged since AskCar first saw it on 6 November 2026, 4 days ago. Good value: £2,915 (8%) under the AskCar estimate of £32,910. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 22 December 2026. Dealer: House Of Motors in Romford, 12 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2019-8d398b004f4d
- 2018 Mercedes-Benz GLS 3.0, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 69,000 miles. Price: £29,995, reduced by £1,000 from £30,995 since AskCar first saw it on 20 September 2026, 51 days ago. Good value: £2,659 (8%) under the AskCar estimate of £32,654. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 4 April 2026; ask the dealer for the current MOT. Dealer: Saracen Motor Group in Rettendon, 6 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-da85a667276a
- 2023 Mercedes-Benz GLS 4.0 GLS63h V8 BiTurbo MHEV AMG Night Edition Executive, 623 bhp, automatic, petrol, SUV, 5 doors, 7 seats, black. Mileage: 27,474 miles. Price: £82,000, reduced by £10,000 from £92,000 since AskCar first saw it on 13 July 2026, 120 days ago. Fair price: £5,916 (6%) under the AskCar estimate of £87,916. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 7 April 2027. Dealer: Saxtons.co.uk in Chelmsford, 11 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2023-e66906a682e0
- 2019 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 58,000 miles. Price: £30,990, unchanged since AskCar first saw it on 3 November 2026, 7 days ago. Fair price: £1,423 (4%) under the AskCar estimate of £32,413. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 20 October 2026; ask the dealer for the current MOT. Dealer: LVMC in High Ongar, 12 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2019-d19d2fce60bd
- 2019 Mercedes-Benz GLS 3.0 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 56,500 miles. Price: £31,240, reduced by £3,093 from £34,333 since AskCar first saw it on 11 September 2026, 60 days ago. Fair price: £1,044 (3%) under the AskCar estimate of £32,284. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 20 May 2027. Dealer: Stratstone Mercedes-Benz of Lakeside in Chafford Hundred and West Thurrock, 10 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2019-60f5478934c6
- 2025 Mercedes-Benz GLS 3.0 GLS450dh MHEV AMG Line Premium Plus, 382 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 4,602 miles. Price: £71,995, reduced by £5,000 from £76,995 since AskCar first saw it on 30 July 2026, 103 days ago. Fair price: £2,214 (2%) under the AskCar estimate of £74,209. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: House Of Motors in Romford, 12 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2025-b500a34de359
- 2026 Mercedes-Benz GLS 3.0 GLS450dh MHEV Business Class, 382 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 5,413 miles. Price: £83,490, unchanged since AskCar first saw it on 6 November 2026, 4 days ago. Fair price: £2,259 (2%) under the AskCar estimate of £85,749. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Stratstone Mercedes-Benz of Chelmsford in Chelmsford, 13 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2026-4c89801c7e54
- 2018 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, white. Mileage: 51,411 miles. Price: £31,150, reduced by £350 from £31,500 since AskCar first saw it on 23 October 2026, 18 days ago. Fair price: £745 (2%) under the AskCar estimate of £31,895. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 16 October 2027. Dealer: Saxtons.co.uk in Chelmsford, 11 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-24629538050e
- 2020 Mercedes-Benz GLS 2.9 GLS400d AMG Line Premium Plus, 325 bhp, automatic, diesel, SUV, 5 doors, 7 seats, grey. Mileage: 66,681 miles. Price: £43,000, unchanged since AskCar first saw it on 24 October 2026, 17 days ago. Fair price: £341 (under 1%) under the AskCar estimate of £43,341. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 7 November 2027. Dealer: Saxtons.co.uk in Chelmsford, 11 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2020-420eb62b643e
- 2024 Mercedes-Benz GLS 3.0 GLS450dh MHEV Business Class, 382 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 24,105 miles. Price: £73,500, reduced by £10,500 from £84,000 since AskCar first saw it on 28 May 2026, 166 days ago. Fair price: £2 (under 1%) over the AskCar estimate of £73,498. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Saxtons.co.uk in Chelmsford, 11 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2024-8b7b1c35ecb3
- 2026 Mercedes-Benz GLS 3.0 GLS450dh MHEV Business Class, 382 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 7,751 miles. Price: £84,650, reduced by £1,050 from £85,700 since AskCar first saw it on 21 October 2026, 20 days ago. Fair price: £650 (under 1%) over the AskCar estimate of £84,000. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Saxtons.co.uk in Chelmsford, 11 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2026-00aa8d8a2303
- 2020 Mercedes-Benz GLS 2.9, 325 bhp, automatic, diesel, SUV, 5 doors, 7 seats, grey. Mileage: 77,165 miles. Price: £39,990, unchanged since AskCar first saw it on 4 November 2026, 6 days ago. Fair price: £375 (under 1%) over the AskCar estimate of £39,615. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 8 February 2027. Dealer: Stratstone Mercedes-Benz of Chelmsford in Chelmsford, 13 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2020-33a21af37922
- 2024 Mercedes-Benz GLS 3.0 GLS450h MHEV AMG Line Premium Plus, 396 bhp, automatic, petrol, SUV, 5 doors, 7 seats, black. Mileage: 16,341 miles. Price: £73,500, unchanged since AskCar first saw it on 30 October 2026, 11 days ago. Fair price: £1,403 (1%) over the AskCar estimate of £72,097. Euro 6 emissions standard. ULEZ compliant. MOT: first test not yet due. Dealer: Saxtons.co.uk in Chelmsford, 11 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2024-8628b1d1cf27
- 2018 Mercedes-Benz GLS 3.0 GLS350d V6 AMG Line, 254 bhp, automatic, diesel, SUV, 5 doors, 7 seats, white. Mileage: 29,000 miles. Price: £37,500, unchanged since AskCar first saw it on 28 May 2026, 166 days ago. Fair price: £1,578 (4%) over the AskCar estimate of £35,922. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 13 December 2026. Dealer: E & E Car Sales in Canvey Island, 5 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2018-799a044589ca
- 2022 Mercedes-Benz GLS 2.9 GLS400d Night Edition Executive, 325 bhp, automatic, diesel, SUV, 5 doors, 7 seats, black. Mileage: 45,838 miles. Price: £60,450, reduced by £4,500 from £64,950 since AskCar first saw it on 13 September 2026, 58 days ago. Fair price: £2,988 (5%) over the AskCar estimate of £57,462. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 5 October 2026; ask the dealer for the current MOT. Dealer: Arbat Motors in Bexleyheath, 15 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2022-b3445f9122b2
- 2021 Mercedes-Benz GLS 4.0, automatic, SUV, 5 doors, 7 seats, grey. Mileage: 72,800 miles. Price: £64,990, unchanged since AskCar first saw it on 4 November 2026, 6 days ago. Above the going rate: £8,484 (15%) over the AskCar estimate of £56,506. Euro 6 emissions standard. MOT: valid until 8 February 2027. Dealer: Stratstone Mercedes-Benz of Chelmsford in Chelmsford, 13 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2021-0a71ca772a74
- 2000 Mercedes-Benz GLS 2.9, automatic, SUV, 5 doors, 7 seats. Mileage: 45,838 miles. Price: £60,450, raised by £20,500 from £39,950 since AskCar first saw it on 14 July 2026, 119 days ago. Above the going rate: £40,374 (201%) over the AskCar estimate of £20,076. Euro 6 emissions standard. Dealer: Arbat Motors in Bexleyheath, 15 miles from Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-gls-2000-d3b0c5e416a6
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