Used Buick Encore GX for Sale in O Fallon, IL
Buy a luxurious Buick Encore GX in the city where Joseph W. Schmitt was born
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320 listings
- Price Drop$25,000great price$6,422 below market
- 5,311 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 29 City / 31 Hwy MPG
- Suntrup West County Volvo Cars (34 mi away)
- Home delivery*
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Located in Manchester, MO / 34 miles away from O Fallon, IL
CARFAX One-Owner. Clean CARFAX. Moonstone Gray Metallic 2025 Buick Encore GX ECOTEC 1.3L Turbo FWD CVT Avenir29/31 City/Highway MPGPrices subject...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4AMFSL9SB006240
Stock: 233241
Certified Pre-Owned: No - Price Drop$21,069great price$2,429 below market
- 19,077 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 26 City / 29 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)
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Located in Saint Louis, MO / 29 miles away from O Fallon, IL
CARFAX One-Owner. Clean CARFAX. Summit White 2023 Buick Encore GX Preferred AWD 9-Speed Automatic ECOTEC 1.3L Turbo 26/29 City/Highway MPG 26/29 City/...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMCSL5PB142934
Stock: B19122XP
Certified Pre-Owned: No
Listed since: 07-16-2025 - $15,995great price$3,215 below market
- 82,641 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 29 City / 31 Hwy MPG
- Dave Sinclair Ford (24 mi away)
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Located in Saint Louis, MO / 24 miles away from O Fallon, IL
Buying our One Owner, Accident-Free 2023 Buick Encore GX Select with the Sport Touring Pack can bring you benefits you never expected in Cinnabar Meta...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4MMDS24PB131078
Stock: 5088501
Certified Pre-Owned: No - Price Drop$23,777great price$2,740 below market
- 12,531 miles
- No accidents, 1 owner, personal use
- 5 Seats, 29 City / 32 Hwy MPG
- Suntrup Buick GMC (40 mi away)
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Located in Saint Peters, MO / 40 miles away from O Fallon, IL
The 2023 Buick Encore GX Essence is a vehicle that is sure to turn heads. This FWD, 1.3 liter ECOTEC Turbo I3 155hp 174 lb-ft engine, direct injection...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/32 Highway)
Listing Information:
VIN: KL4MMFSL0PB116758
Stock: P6719
Certified Pre-Owned: Yes
Listed since: 06-13-2025 - $29,458good price$3,713 below market
- 5,231 miles
- No accidents, personal use only
- 5 Seats, 26 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)
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Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Ebony Twilight Metallic 2 USB Ports (1 Type-A, 1 Type-C), 2-Way Front Passenger Power Lumbar, 2-Way Power Driver Lumbar Control, 3.17 Final Drive Axle...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: KL4AMGSL6SB090314
Stock: 252166RR
Certified Pre-Owned: No
Listed since: 08-15-2025 - $24,777great price$1,894 below market
- 2,171 miles
- No accidents, 1 owner, personal use
- 5 Seats, 29 City / 31 Hwy MPG
- Suntrup Buick GMC (40 mi away)
Close
Located in Saint Peters, MO / 40 miles away from O Fallon, IL
This vehicle is a 2024 Buick Encore GX Sport Touring, with low mileage of 2,171 miles. It is equipped with a 1.3 liter 3 cylinder turbocharged engine,...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4AMDSL9RB117143
Stock: P6791
Certified Pre-Owned: Yes
Listed since: 08-22-2025 - $21,397great price$1,718 below market
- 33,698 miles
- No accidents, 1 owner, rental vehicle
- 5 Seats, 29 City / 31 Hwy MPG
- EchoPark Automotive St. Louis (42 mi away)
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Located in Chestefield, MO / 42 miles away from O Fallon, IL
At EchoPark, it’s all about offering you options for a happy experience. We have thousands of new-to-you makes and models that range from sedans to tr...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4AMDSL4RB088599
Stock: RRB088599
Certified Pre-Owned: No
Listed since: 08-18-2025 - $20,997great price$1,798 below market
- 39,255 miles
- No accidents, 1 owner, rental vehicle
- 5 Seats, 29 City / 31 Hwy MPG
- EchoPark Automotive St. Louis (42 mi away)
Close
Located in Chestefield, MO / 42 miles away from O Fallon, IL
At EchoPark, it’s all about offering you options for a happy experience. We have thousands of new-to-you makes and models that range from sedans to tr...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4AMDSL6RB115432
Stock: RRB115432
Certified Pre-Owned: No
Listed since: 08-18-2025 - New Listing$23,812good price$2,535 below market
- 16,310 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 26 City / 29 Hwy MPG
- Weber Chevrolet Creve Coeur (31 mi away)
- Five Star Dealer
Close
Located in Creve Coeur, MO / 31 miles away from O Fallon, IL
2023 Buick Encore GX Essence **ANOTHER WEBER 1-OWNER VEHICLE**, **BLUETOOTH HANDS FREE MOBILE**, **HEATED SEATS**, **KEYLESS ENTRY**, **REMOTE START**...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMGSL8PB113029
Stock: P16584
Certified Pre-Owned: No
Listed since: 04-10-2025 - $23,231good price$814 below market
- 21,688 miles
- No accidents, 1 owner, personal use
- 5 Seats, 26 City / 29 Hwy MPG
- Suntrup Buick GMC (40 mi away)
Close
Located in Saint Peters, MO / 40 miles away from O Fallon, IL
This vehicle is a 2023 Buick Encore GX Select with an all-wheel drive system and a 1.3 liter 3 cylinder engine that has been turbocharged. It has a cr...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMESL4PB058325
Stock: P6767
Certified Pre-Owned: Yes
Listed since: 07-15-2025 - $24,006fair price$116 below market
- 9,851 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 26 City / 29 Hwy MPG
- AutoCenters Nissan (35 mi away)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
ONE OWNER with ZERO ACCIDENTS, All Wheel Drive, Hands-Free Power Liftgate Package, Encore GX Select AWD - Heated Seats - Remote Start, 4D Sport Utilit...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMESL7PB045973
Stock: R84876
Certified Pre-Owned: No
Listed since: 07-09-2025 - New Listing$21,990fair price$239 below market
- 24,435 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 26 City / 29 Hwy MPG
- Carvana - St. Louis (17 mi away)
- Home delivery*
Close
Located in St. Louis, MO / 17 miles away from O Fallon, IL
At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMESLXPB003975
Stock: 2003885063
Certified Pre-Owned: No
Listed since: 07-14-2025 - Price Drop$24,640good price$1,794 below market
- 15,142 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 26 City / 29 Hwy MPG
- Suntrup Buick GMC (40 mi away)
Close
Located in Saint Peters, MO / 40 miles away from O Fallon, IL
This 2023 Buick Encore GX Essence is a vehicle that is sure to turn heads. Boasting a low mileage of 15,142 miles, this all wheel drive car has a gray...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMGSL6PB119136
Stock: P6619
Certified Pre-Owned: No
Listed since: 04-30-2025 - New Listing$23,912good price$1,031 below market
- 7,738 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 26 City / 29 Hwy MPG
- Weber Chevrolet Creve Coeur (31 mi away)
- Five Star Dealer
Close
Located in Creve Coeur, MO / 31 miles away from O Fallon, IL
2023 Buick Encore GX Select **ANOTHER WEBER 1-OWNER VEHICLE**, **BLUETOOTH HANDS FREE MOBILE**, **HEATED SEATS**, **KEYLESS ENTRY**, **REMOTE START**,...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMESL0PB127981
Stock: P16634
Certified Pre-Owned: No
Listed since: 05-08-2025 - New Listing$23,995good price$1,922 below market
- 34,675 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 26 City / 29 Hwy MPG
- Laura Buick GMC (11 mi away)
Close
Located in Collinsville, IL / 11 miles away from O Fallon, IL
This Certified Pre-Owned vehicle comes with the following benefits: -12-month/12,000-mile Bumper-to-Bumper Limited Warranty (whichever comes first) fr...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
28 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMGSL2MB113314
Stock: L26179A
Certified Pre-Owned: Yes
Listed since: 08-19-2025 - Price Drop$20,211fair price$660 above market
- 30,043 miles
- No accidents, 1 owner, personal use
- 5 Seats, 29 City / 31 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
CARFAX One-Owner. Clean CARFAX. Sapphire Metallic 2023 Buick Encore GX Select FWD CVT ECOTEC 1.2L Turbo 29/31 City/Highway MPG 29/31 City/Highway MPGL...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4MMDS29PB060539
Stock: B207740A
Certified Pre-Owned: No
Listed since: 07-12-2025 - Price Drop$26,292fair price$1,035 below market
- 5,632 miles
- No accidents, 1 owner, personal use only
- 5 Seats, 29 City / 31 Hwy MPG
- Victory Toyota of St. Louis (25 mi away)
Close
Located in Saint Louis, MO / 25 miles away from O Fallon, IL
This **stylish** 2025 Buick Encore GX Sport Touring was a **local trade-in** right here at Victory Toyota St. Louis. With only **5,000 miles**, this S...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4AMDSL0SB023089
Stock: 86E08047
Certified Pre-Owned: No
Listed since: 08-18-2025 - $24,110fair price$787 above market
- 17,734 miles
- No accidents, 1 owner, personal use
- 5 Seats, 26 City / 29 Hwy MPG
- Mungenast St Louis Acura (32 mi away)
Close
Located in Manchester, MO / 32 miles away from O Fallon, IL
CARFAX One-Owner. Clean CARFAX. CLEAN CARFAX One Owner!, Great Service History!, AWD!, Bluetooth, Local Trade, Advanced Safety Features!, Apple CarPla...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/29 Highway)
Listing Information:
VIN: KL4MMESL5PB096999
Stock: D12268P
Certified Pre-Owned: No
Listed since: 07-11-2025 - Price Drop$23,790fair price$241 below market
- 17,602 miles
- No accidents, 1 owner, personal use
- 5 Seats, 26 City / 28 Hwy MPG
- Suntrup Buick GMC (40 mi away)
Close
Located in Saint Peters, MO / 40 miles away from O Fallon, IL
This 2024 Buick Encore GX Preferred is a state-of-the-art automobile that has been meticulously crafted to provide the ultimate in luxury and performa...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: KL4AMCSL5RB003263
Stock: P6773
Certified Pre-Owned: No
Listed since: 08-05-2025 - New Listing$19,397good price$735 below market
- 32,980 miles
- No accidents, 1 owner, corporate fleet vehicle
- 5 Seats, 29 City / 31 Hwy MPG
- EchoPark Automotive St. Louis (42 mi away)
Close
Located in Chestefield, MO / 42 miles away from O Fallon, IL
At EchoPark, it’s all about offering you options for a happy experience. We have thousands of new-to-you makes and models that range from sedans to tr...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4MMBS25PB065791
Stock: PPB065791
Certified Pre-Owned: No
Listed since: 08-12-2025 - $26,477fair price$854 below market
- 8,854 miles
- No accidents, 1 owner, personal use
- 5 Seats, 29 City / 31 Hwy MPG
- Suntrup Buick GMC (40 mi away)
Close
Located in Saint Peters, MO / 40 miles away from O Fallon, IL
This 2025 Buick Encore GX Sport Touring is a vehicle that is sure to turn heads. With a low mileage of 8,854 miles, this car has been driven only a fe...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
30 Combined MPG (29 City/31 Highway)
Listing Information:
VIN: KL4AMDSL4SB113233
Stock: P6785
Certified Pre-Owned: No
Listed since: 08-12-2025
Showing 1 - 21 out of 320 listings
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