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Used Mercedes-Benz GLS in Illinois

59 listings from 25 dealer lots in Illinois, $9,953 to $117,999 (median $55,908). 6 price drops this week. Newest first. Refine with filters

  1. 2021 Mercedes-Benz GLS Maybach GLS 600
    33,352 mi·AWD·BlackGravity Autos Chicago · Highland Park, IL
    $108,989
  2. 2018 Mercedes-Benz GLS 450
    86,866 mi·AWD·BlackCarWise Gurnee · Gurnee, IL
    $20,376
  3. 2017 Mercedes-Benz GLS 450
    97,043 mi·AWD·OrangeCarWise Gurnee · Gurnee, IL
    $15,876
  4. 2020 Mercedes-Benz GLS 450
    97,340 mi·Polar WhiteLexus of Peoria · Peoria, IL
    $27,703
  5. 2020 Mercedes-Benz GLS 450
    66,610 mi·AWD·GrayMaserati Alfa Romeo of Naperville · Naperville, IL
    $34,999
  6. 2023 Mercedes-Benz GLS 450
    39,808 mi·AWD·GrayMaserati Alfa Romeo of Naperville · Naperville, IL
    $53,998
  7. 2025 Mercedes-Benz GLS 450
    8,389 mi·AWD·Polar WhiteLeader Auto Bloomington Normal Automall · Normal, IL
    $69,576
  8. 2025 Mercedes-Benz GLS 450
    53,293 mi·AWD·SilverZeigler Chrysler Dodge Jeep Ram of Schaumburg · Schaumburg, IL
    $49,976
  9. 2026 Mercedes-Benz GLS 450
    12,972 mi·AWD·Polar WhiteZeigler Chrysler Dodge Jeep Ram of Schaumburg · Schaumburg, IL
    $72,599$74,956
    $2,357 price drop
  10. 2026 Mercedes-Benz GLS 450
    16,806 mi·AWD·BlackZeigler Chrysler Dodge Jeep Ram of Schaumburg · Schaumburg, IL
    $70,764$74,888
    $4,124 price drop
  11. 2017 Mercedes-Benz GLS 450
    77,117 mi·Iridium Silver MetallicHuntley Ford · Huntley, IL
    $17,190
  12. 2021 Mercedes-Benz GLS 63 AMG®
    58,782 mi·GreenHuntley Ford · Huntley, IL
    $59,190
  13. 2021 Mercedes-Benz GLS 450
    36,165 mi·AWD·BlackMarion Buick GMC · Marion, IL
    $43,995
  14. 2019 Mercedes-Benz GLS 550
    37,975 mi·AWD·WhiteGlenview Luxury Imports · Glenview, IL
    $38,411
  15. 2025 Mercedes-Benz GLS 450
    49,860 mi·AWD·BlackCountryside Mitsubishi · Countryside, IL
    $56,908
  16. 2026 Mercedes-Benz GLS 4MATIC
    241 mi·AWD·BlackMercedes-Benz of Westmont · Westmont, IL
    $87,155
    Certified
  17. 2017 Mercedes-Benz GLS 450 4MATIC®
    178,273 mi·Obsidian Black MetallicSchaumburg Ford · Schaumburg, IL
    $9,953$10,904
    $951 price drop
  18. 2025 Mercedes-Benz GLS 450
    35,437 mi·AWD·BlackCountryside Mitsubishi · Countryside, IL
    $57,908
  19. 2024 Mercedes-Benz GLS 450
    17,375 mi·AWD·GRAY4440 West Wabash, Springfield, IL 62711 Go · Springfield, IL
    $70,312
  20. 2019 Mercedes-Benz GLS 450
    86,133 mi·AWD·OrangeCarWise Gurnee · Gurnee, IL
    $21,376
  21. 2023 Mercedes-Benz GLS 4MATIC
    59,180 mi·AWD·MANUFAKTUR Diamond WhiteLaurel BMW of Westmont · Westmont, IL
    $48,673
  22. 2017 Mercedes-Benz GLS 450
    105,939 mi·AWD·BlackYour Choice Autos - Joliet · Joliet, IL
    $17,876
  23. 2023 Mercedes-Benz GLS Maybach GLS 600
    29,905 mi·AWD·SilverMaserati Alfa Romeo of Naperville · Naperville, IL
    $117,999$118,999
    $1,000 price drop
  24. 2021 Mercedes-Benz GLS 63 AMG
    41,703 mi·AWD·GrayMaserati Alfa Romeo of Naperville · Naperville, IL
    $70,198$71,588
    $1,390 price drop
  25. 2025 Mercedes-Benz GLS 450
    35,849 mi·AWD·GrayJidd Motors Mitsubishi · Des Plaines, IL
    $58,908
  26. 2025 Mercedes-Benz GLS 450
    35,146 mi·AWD·BlackCountryside Mitsubishi · Countryside, IL
    $58,908
  27. 2025 Mercedes-Benz GLS 450
    39,650 mi·AWD·GrayCountryside Mitsubishi · Countryside, IL
    $56,908
  28. 2025 Mercedes-Benz GLS 450
    49,234 mi·AWD·SilverJidd Motors Mitsubishi · Des Plaines, IL
    $55,908
  29. 2019 Mercedes-Benz GLS 550
    93,661 mi·AWD·WhiteYour Choice Autos - Joliet · Joliet, IL
    $25,376
  30. 2022 Mercedes-Benz GLS 450
    64,478 mi·AWD·BlackMaserati Alfa Romeo of Naperville · Naperville, IL
    $45,698$45,998
    $300 price drop
  31. 2026 Mercedes-Benz GLS 4MATIC
    5,632 mi·AWD·Cirrus SilverLaurel BMW of Westmont · Naperville, IL
    $81,868$82,376
    $508 price drop
  32. 2026 Mercedes-Benz GLS 4MATIC
    5,520 mi·AWD·BlackLaurel BMW of Westmont · Naperville, IL
    $81,868$82,506
    $638 price drop
  33. 2026 Mercedes-Benz GLS 4MATIC
    7,353 mi·AWD·BlackLaurel BMW of Westmont · Westmont, IL
    $95,676$96,356
    $680 price drop
  34. 2020 Mercedes-Benz GLS 450
    51,945 mi·Emerald Green MetallicElgin Hyundai · Bartlett, IL
    $35,946$37,399
    $1,453 price drop
  35. 2026 Mercedes-Benz GLS 4MATIC
    6,416 mi·AWD·Twilight BlueMercedes-Benz of Naperville · Naperville, IL
    $86,376$87,355
    $979 price drop
  36. 2019 Mercedes-Benz GLS 450
    77,805 mi·AWD·BlackCarWise Gurnee · Gurnee, IL
    $23,576$23,876
    $300 price drop

See every model: Used Mercedes-Benz GLS for sale.

Lower asking prices in Illinois, the cars priced below their matching comparison median.

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