Mercedes-Benz GLS-Class for Sale in Illinois

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$13,968

132,169 mi

Est. $212/mo*

110 days at this dealer

GrayBlack

Motorcars Express

Alsip, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$14,362

135,319 mi

Est. $218/mo*

94 days at this dealer

Polar WhiteBrown

Prince Auto Sales

Waukegan, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$14,995

102,557 mi

Est. $227/mo*

128 days at this dealer

WhiteBlack

Prime Rides Autohaus

Dwight, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$15,362

155,555 mi

Est. $232/mo*

144 days at this dealer

WhiteBrown

Adam Auto Group

Crestwood, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$16,495

102,317 mi

Est. $248/mo*

77 days at this dealer

OtherOther

Titan Auto Sales

Worth, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$16,683

96,583 mi

Est. $251/mo*

21 days at this dealer

BlackBlack

Jaguar Schaumburg

Schaumburg, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 450

$17,274

110,571 mi

Est. $259/mo*

77 days at this dealer

BlueTan

BG Motorcars

Naperville, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 450

$17,362

126,305 mi

Est. $261/mo*

124 days at this dealer

SilverBlack

Adam Auto Group

Crestwood, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 450

$17,406

92,356 mi

Est. $261/mo*

36 days at this dealer

BlueBrown

Ed Napleton Acura KIA of Elmhurst

Elmhurst, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 550

$17,407

129,817 mi

Est. $261/mo*

48 days at this dealer

BlueBlack

Lux Cars Chicago

Buffalo Grove, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$17,413

77,117 mi

Est. $261/mo*

104 days at this dealer

SilverBlack

Old Orchard Nissan

Skokie, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$17,440

93,795 mi

Est. $262/mo*

19 days at this dealer

SilverBlack

Car City Inc.

Palatine, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$17,862

127,993 mi

Est. $268/mo*

124 days at this dealer

GrayBlack

Adam Auto Group

Crestwood, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$17,876

105,939 mi

Est. $268/mo*

164 days at this dealer

BlackTan

Your Choice Auto Sales of Crestwood

Joliet, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 550

$18,362

126,859 mi

Est. $275/mo*

19 days at this dealer

BlackBlack

Prince Auto Sales

Waukegan, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 550

$18,641

105,361 mi

Est. $279/mo*

78 days at this dealer

BlackBlack

Baha Auto Group - Palos Hills

Palos Hills, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$19,300

93,000 mi

Est. $288/mo*

135 days at this dealer

WhiteBrown

Supreme Carriage

Wauconda, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$19,357

100,952 mi

Est. $289/mo*

152 days at this dealer

SilverBlack

Driven Auto of Dundee

East Dundee, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$20,094

76,778 mi

Est. $300/mo*

95 days at this dealer

BlackBlack

Fairway Auto Sales

Melrose Park, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 450

$20,293

90,375 mi

Est. $302/mo*

13 days at this dealer

BlueBrown

Auto Choice Inc.

Des Plaines, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$20,300

75,028 mi

Est. $303/mo*

21 days at this dealer

Polar WhiteBrown

Chicago Auto Place

Downers Grove, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 450

$20,407

74,106 mi

Est. $304/mo*

7 days at this dealer

BlackBlack

Bunt Motors Inc.

Northbrook, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 63 AMG

$20,495

149,277 mi

Est. $305/mo*

7 days at this dealer

BlackBlack

Zain Motors LLC

Springfield, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 450

$20,676

76,270 mi

Est. $308/mo*

235 days at this dealer

BlueEspresso Brown

Star Motor Sales

Downers Grove, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 550

$20,995

111,914 mi

Est. $312/mo*

37 days at this dealer

WhiteBlack

Community Motors

Bloomington, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$21,373

67,630 mi

Est. $318/mo*

13 days at this dealer

SilverBlack

Luxury Car Outlet

West Chicago, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$21,376

86,128 mi

Est. $318/mo*

5 days at this dealer

WhiteEspresso Brown

CarWise Gurnee

Gurnee, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$21,723

97,000 mi

Est. $323/mo*

95 days at this dealer

WhiteBlack

Mundo Auto Sales Inc.

Elgin, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$21,814

54,905 mi

Est. $324/mo*

13 days at this dealer

White

Sam Leman Chevrolet Champaign

Champaign, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$21,977

84,353 mi

Est. $327/mo*

445 days at this dealer

BlackTan

Star Motor Sales

Downers Grove, IL

Used 2017 Mercedes-Benz GLS-Class

GLS 450

$22,330

49,914 mi

Est. $332/mo*

Cavansite BlueAlmond

Jaguar Schaumburg

Schaumburg, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 550

$22,362

116,110 mi

Est. $332/mo*

238 days at this dealer

WhiteBlack

Affinity Auto Sales

West Chicago, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$22,373

77,203 mi

Est. $332/mo*

94 days at this dealer

Polar WhiteBlack

Motor Cars Mitsubishi

Aurora, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$22,795

89,936 mi

Est. $338/mo*

4 days at this dealer

GrayBrown

DriveTime of Chicago - Midlothian

Midlothian, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$22,873

86,264 mi

Est. $339/mo*

159 days at this dealer

Polar WhiteBlack

Motor Cars Mitsubishi

Aurora, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$23,576

77,805 mi

Est. $349/mo*

21 days at this dealer

BlackPorcelain/Black

CarWise Gurnee

Gurnee, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 550

$24,362

76,318 mi

Est. $360/mo*

149 days at this dealer

BlackBlack

Adam Auto Group

Crestwood, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$24,995

88,064 mi

Est. $370/mo*

187 days at this dealer

BlackBrown

Baha Auto Group - Palos Hills

Palos Hills, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$25,353

62,554 mi

Est. $375/mo*

19 days at this dealer

WhiteBlack

Economy Plus Auto Sales

Dundee, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$25,405

72,959 mi

Est. $375/mo*

4 days at this dealer

GrayBlack

Jaguar Rockford

Rockford, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$26,488

48,402 mi

Est. $391/mo*

21 days at this dealer

BlackBlack

iDrive Motor Sports Inc.

Berwyn, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$27,488

57,141 mi

Est. $405/mo*

WhiteBlack

Howard Orloff Volvo

Chicago, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$27,951

97,340 mi

Est. $412/mo*

19 days at this dealer

WhiteBlack

Lexus of Peoria

Peoria, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$28,431

51,968 mi

Est. $418/mo*

21 days at this dealer

BlackBlack

Knauz Continental Autos

Lake Bluff, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 450

$28,753

52,717 mi

Est. $423/mo*

4 days at this dealer

BlackBrown

Dart Motors LLC

Mchenry, IL

Used 2021 Mercedes-Benz GLS-Class

GLS 450

$29,300

95,871 mi

Est. $431/mo*

19 days at this dealer

WhiteBlack

Loeber Motors

Lincolnwood, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$29,362

97,434 mi

Est. $432/mo*

19 days at this dealer

GreenBrown

Twins Auto Mall

Rockford, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$29,495

81,054 mi

Est. $434/mo*

21 days at this dealer

Polar WhiteBrown

Lexus of Arlington

Arlington Heights, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$29,762

77,633 mi

Est. $437/mo*

41 days at this dealer

GrayCashmere

Auto Gallery Chicago

Addison, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 550

$29,877

61,375 mi

Est. $439/mo*

21 days at this dealer

WhiteBlack

Haus of Imports

Lemont, IL

Used 2018 Mercedes-Benz GLS-Class

GLS 63 AMG

$30,872

93,535 mi

Est. $453/mo*

73 days at this dealer

BlackBlack

Auto Mall of Springfield

Springfield, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$31,266

74,158 mi

Est. $459/mo*

4 days at this dealer

Black

Serra Automotive Champaign

Savoy, IL

Used 2021 Mercedes-Benz GLS-Class

GLS 450

$31,999

89,232 mi

Est. $469/mo*

11 days at this dealer

SilverBrown

KNB Motors Inc.

Northlake, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$32,252

65,102 mi

Est. $473/mo*

19 days at this dealer

BlackGray

Lexus of Peoria

Peoria, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 550

$32,362

74,324 mi

Est. $475/mo*

225 days at this dealer

GrayBlack

Affinity Auto Sales

West Chicago, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$32,372

83,863 mi

Est. $475/mo*

62 days at this dealer

Silver

Exclusive Auto Haus

Roselle, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$33,595

62,599 mi

Est. $492/mo*

7 days at this dealer

SilverBlack

Napleton's Arlington Heights Chrysler Dodge Jeep RAM

Arlington Heights, IL

Used 2019 Mercedes-Benz GLS-Class

GLS 63 AMG

$34,995

62,500 mi

Est. $512/mo*

207 days at this dealer

BlackBlack

Blue Sky Auto Sales - Crestwood

Crestwood, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 450

$37,003

51,940 mi

Est. $541/mo*

13 days at this dealer

GreenGray

Elgin Hyundai

Bartlett, IL

Used 2021 Mercedes-Benz GLS-Class

GLS 450

$37,362

77,859 mi

Est. $546/mo*

79 days at this dealer

WhiteBrown

Twins Auto Mall

Rockford, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 580

$40,300

41,871 mi

Est. $588/mo*

21 days at this dealer

BlueGray

Chicago Auto Place

Downers Grove, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$41,900

62,719 mi

Est. $610/mo*

87 days at this dealer

SilverBlack

Motor Deals USA

Glenview, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$42,110

64,478 mi

Est. $613/mo*

21 days at this dealer

BlackBlack

Maserati, Alfa Romeo & FIAT of Naperville

Naperville, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$42,407

59,889 mi

Est. $618/mo*

52 days at this dealer

BlackBlack

Mercedes-Benz of Chicago

Chicago, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$42,712

61,615 mi

Est. $622/mo*

187 days at this dealer

GreyEspresso

Mercedes-Benz of St Charles

St. Charles, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$43,362

72,703 mi

Est. $631/mo*

7 days at this dealer

BlackBlack

Adam Auto Group

Crestwood, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$43,401

31,501 mi

Est. $632/mo*

200 days at this dealer

SilverBlack

Gravity Autos Chicago

Highland Park, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$44,270

46,579 mi

Est. $644/mo*

186 days at this dealer

SilverBlack

Elmhurst Chrysler Dodge Jeep RAM

Elmhurst, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$45,004

44,996 mi

Est. $655/mo*

37 days at this dealer

WhiteBlack

Kunes Lakes Chevrolet‎

Lake Bluff, IL

Used 2020 Mercedes-Benz GLS-Class

GLS 580

$46,822

38,560 mi

Est. $681/mo*

11 days at this dealer

Gray MetallicBlack

Mercedes-Benz of Chicago

Chicago, IL

Certified 2022 Mercedes-Benz GLS-Class

GLS 450

$47,238

34,837 mi

Est. $687/mo*

56 days at this dealer

BlackBlack

Al Piemonte Buick GMC

Elmhurst, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 450

$47,282

59,644 mi

Est. $687/mo*

19 days at this dealer

BlackBlack

Zeigler Chrysler Dodge Jeep RAM of Schaumburg

Schaumburg, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$47,312

45,815 mi

Est. $688/mo*

18 days at this dealer

Polar WhiteBlack

Motor Werks Honda

Barrington, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 450

$47,402

60,851 mi

Est. $689/mo*

63 days at this dealer

Polar WhiteBlack

BMW of Bloomington

Bloomington, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$48,255

39,443 mi

Est. $701/mo*

21 days at this dealer

BlueBlack

Chicago Auto Place

Downers Grove, IL

Used 2021 Mercedes-Benz GLS-Class

GLS 580

$48,309

44,920 mi

Est. $702/mo*

11 days at this dealer

Gray MetallicBlack

Mercedes-Benz of Chicago

Chicago, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$48,411

36,955 mi

Est. $703/mo*

59 days at this dealer

BlueBlack

Fair Oaks Ford

Naperville, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 450

$49,357

54,046 mi

Est. $717/mo*

106 days at this dealer

Polar WhiteBlack

Driven Auto of Oak Forest

Oak Forest, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$50,410

33,498 mi

Est. $732/mo*

13 days at this dealer

BlueBlack

Loeber Motors

Lincolnwood, IL

Certified 2023 Mercedes-Benz GLS-Class

GLS 450

$51,208

44,778 mi

Est. $743/mo*

60 days at this dealer

Polar WhiteBlack

Ottawa Ford / Ottawa KIA

Ottawa, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$51,810

37,561 mi

Est. $752/mo*

16 days at this dealer

Gray MetallicBlack

Mercedes-Benz of Chicago

Chicago, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$53,858

62,471 mi

Est. $781/mo*

19 days at this dealer

GrayBlack

Onyx Motors Ltd.

Glenview, IL

Used 2025 Mercedes-Benz GLS-Class

GLS 450

$53,908

49,234 mi

Est. $782/mo*

21 days at this dealer

BlackBlack

Jidd Motors Mitsubishi

Des Plaines, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 580

$54,389

52,203 mi

Est. $788/mo*

19 days at this dealer

BlackBlack

Gerald Honda of Matteson

Matteson, IL

Used 2025 Mercedes-Benz GLS-Class

GLS 450

$55,307

53,293 mi

Est. $802/mo*

4 days at this dealer

SilverBrown

Zeigler Chrysler Dodge Jeep RAM of Schaumburg

Schaumburg, IL

Used 2022 Mercedes-Benz GLS-Class

GLS 450

$55,411

30,599 mi

Est. $803/mo*

23 days at this dealer

BlackBlack

Mercedes-Benz of Hoffman Estates

Hoffman Estates, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$55,734

21,199 mi

Est. $808/mo*

21 days at this dealer

GrayBlack

Driven Auto Sales

Burbank, IL

Used 2025 Mercedes-Benz GLS-Class

GLS 450

$56,908

26,731 mi

Est. $824/mo*

19 days at this dealer

SilverBlack Mb-Tex

Jidd Motors Mitsubishi

Des Plaines, IL

Used 2025 Mercedes-Benz GLS-Class

GLS 450

$56,908

35,849 mi

Est. $824/mo*

21 days at this dealer

GrayBlack Mb-Tex

Jidd Motors Mitsubishi

Des Plaines, IL

Used 2025 Mercedes-Benz GLS-Class

GLS 450

$56,908

35,146 mi

Est. $824/mo*

22 days at this dealer

BlackBlack

Countryside Mitsubishi

Countryside, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$57,223

43,849 mi

Est. $829/mo*

38 days at this dealer

WhiteBlack

Elmhurst Ford

Bensenville, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 450

$57,900

22,962 mi

Est. $838/mo*

135 days at this dealer

SeleniteBlack

Perillo BMW

Chicago, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 450

$58,499

22,175 mi

Est. $847/mo*

95 days at this dealer

SilverBlack

Eurocar Irvine

Schaumburg, IL

Used 2025 Mercedes-Benz GLS-Class

GLS 450

$59,137

26,164 mi

Est. $856/mo*

68 days at this dealer

WhiteBlack

Heritage Cadillac

Lombard, IL

Used 2021 Mercedes-Benz GLS-Class

GLS 63 S AMG

$59,390

58,782 mi

Est. $860/mo*

83 days at this dealer

GreenBlack

Old Orchard Nissan

Skokie, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$59,989

49,125 mi

Est. $868/mo*

55 days at this dealer

BlackMacchiato Beige

Kunes Auto Mall of Sycamore

Sycamore, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$60,312

61,234 mi

Est. $873/mo*

19 days at this dealer

WhiteBrown

Isringhausen Imports

Springfield, IL

Used 2023 Mercedes-Benz GLS-Class

GLS 450

$60,372

36,389 mi

Est. $874/mo*

5 days at this dealer

Gray MetallicBlack

Mercedes-Benz of Chicago

Chicago, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$60,375

47,120 mi

Est. $874/mo*

145 days at this dealer

Polar WhiteBlack

Heller Chevrolet GMC

El Paso, IL

Used 2024 Mercedes-Benz GLS-Class

GLS 450

$61,883

28,813 mi

Est. $895/mo*

18 days at this dealer

GrayBlack

Kunes Hyundai of Sycamore

Sycamore, IL