Used Buick Encore GX for Sale in O Fallon, IL

Located in Saint Peters, MO / 40 miles away from O Fallon, IL

This vehicle is a 2023 Buick Encore GX Preferred, with low mileage of 12,617 miles. It is a FWD, 1.2 liter 3 cylinder engine, turbocharged motorcar th...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4MMBS26PB083877
Stock: P6680
Certified Pre-Owned: Yes
Listed since: 05-19-2025

Located in Saint Peters, MO / 40 miles away from O Fallon, IL

This vehicle is a 2024 Buick Encore GX Preferred, with low mileage of 5,803 miles. It is a FWD, 1.2 liter 3 cylinder engine, turbocharged motorcar tha...

Features and Specs:

30 Combined MPG (30 City/31 Highway)

Listing Information:

VIN: KL4AMBS2XRB039001
Stock: P6675
Certified Pre-Owned: No
Listed since: 05-14-2025

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**,...

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

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...

Features and Specs:

27 Combined MPG (26 City/28 Highway)

Listing Information:

VIN: KL4AMESL5RB214703
Stock: L246595A
Certified Pre-Owned: Yes
Listed since: 06-14-2025

Located in Saint Peters, MO / 40 miles away from O Fallon, IL

This 2024 Buick Encore GX Preferred is a vehicle that is sure to turn heads. It has a low mileage of 5,190 miles and is powered by a 1.2 liter 3 cylin...

Features and Specs:

30 Combined MPG (30 City/31 Highway)

Listing Information:

VIN: KL4AMBS24RB199990
Stock: P6676
Certified Pre-Owned: No
Listed since: 05-14-2025

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...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4MMBS27PB091633
Stock: PPB091633
Certified Pre-Owned: No
Listed since: 05-22-2025

Located in Saint Peters, MO / 40 miles away from O Fallon, IL

This vehicle is a 2023 Buick Encore GX Preferred, with low mileage of 11,256 miles. It is a FWD, 1.2 liter 3 cylinder engine, turbocharged car with a ...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4MMBS22PB130368
Stock: P6703
Certified Pre-Owned: Yes
Listed since: 05-28-2025

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

ONE OWNER with ZERO ACCIDENTS, Experience Buick Package, Sport Touring Package, Hands-Free Power Liftgate Package, Panoramic Roof, Heated Front Bucket...

Features and Specs:

Listing Information:

VIN: KL4MMDSL8PB164951
Stock: R84199
Certified Pre-Owned: No
Listed since: 04-24-2025

Located in O Fallon, MO / 45 miles away from O Fallon, IL

Come see this 2023 Buick Encore GX Preferred. Its Automatic transmission and Turbocharged 1.3/ engine will keep you going. This Buick Encore GX featur...

Features and Specs:

27 Combined MPG (26 City/29 Highway)

Listing Information:

VIN: KL4MMCSL5PB142934
Stock: DZ04296P
Certified Pre-Owned: No
Listed since: 05-23-2025

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

** We are 15 minutes south of St. Louis. Everyone leaves happy! Ebony Twilight Metallic 2024 Buick Encore GX Preferred FWD CVT ECOTEC 1.2L Turbo Ebony...

Features and Specs:

30 Combined MPG (30 City/31 Highway)

Listing Information:

VIN: KL4AMBS25RB003314
Stock: 257211
Certified Pre-Owned: No
Listed since: 03-19-2025

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**...

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

Located in Saint Peters, MO / 40 miles away from O Fallon, IL

The 2023 Buick Encore GX Essence is a state-of-the-art vehicle, with a direct injection 1.3 liter Turbo I3 155hp 174 lb-ft engine and FWD capabilities...

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

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

** We are 15 minutes south of St. Louis. Everyone leaves happy! Ebony Twilight Metallic 2025 Buick Encore GX Avenir AWD 9-Speed Automatic ECOTEC 1.3L ...

Features and Specs:

27 Combined MPG (26 City/28 Highway)

Listing Information:

VIN: KL4AMGSL4SB040608
Stock: 2521231
Certified Pre-Owned: No
Listed since: 05-02-2025

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

ONE OWNER with ZERO ACCIDENTS, All Wheel Drive, Encore GX Select AWD - Sport Touring Pkg - Heated Seats, 4D Sport Utility, AWD, Ebony Twilight Metalli...

Features and Specs:

27 Combined MPG (26 City/29 Highway)

Listing Information:

VIN: KL4MMESL8PB109051
Stock: R84190
Certified Pre-Owned: No
Listed since: 04-24-2025

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

ONE OWNER with ZERO ACCIDENTS, Encore GX Select, 4D Sport Utility, White Frost Tricoat, 18" Aluminum Wheels, 2 USB Ports w/Auxiliary Input Jack, 2-Way...

Features and Specs:

Listing Information:

VIN: KL4MMDSL5LB125938
Stock: A84243
Certified Pre-Owned: No
Listed since: 06-05-2025

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

ONE OWNER with ZERO ACCIDENTS, Encore GX Sport Touring, 4D Sport Utility, Summit White, 2 USB Ports (1 Type-A, 1 Type-C), 2-Way Power Driver Lumbar Co...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4AMDSL0RB087997
Stock: R84359
Certified Pre-Owned: No
Listed since: 05-08-2025

Located in Saint Peters, MO / 42 miles away from O Fallon, IL

CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

Features and Specs:

30 Combined MPG (30 City/31 Highway)

Listing Information:

VIN: KL4AMBS28RB026912
Stock: 27437560
Certified Pre-Owned: No

Located in Herculaneum, MO / 35 miles away from O Fallon, IL

ONE OWNER with ZERO ACCIDENTS, All Wheel Drive, Encore GX Select, 4D Sport Utility, AWD, Rosewood Metallic, 18" Machined Aluminum Wheels, 3.17 Final D...

Features and Specs:

27 Combined MPG (26 City/29 Highway)

Listing Information:

VIN: KL4MMESL2PB081618
Stock: RK84383
Certified Pre-Owned: No
Listed since: 05-13-2025

Located in Saint Louis, MO / 24 miles away from O Fallon, IL

CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4AMDSL4RB167660
Stock: 27255772
Certified Pre-Owned: No

Located in Germantown, IL / 18 miles away from O Fallon, IL

2023 Buick Encore GX PreferredClean CARFAX. CARFAX One-Owner.29/31 City/Highway MPGOdometer is 6588 miles below market average!The Jansen Advantage: C...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4MMBS29PB136541
Stock: J3834
Certified Pre-Owned: No
Listed since: 06-11-2025

Located in Saint Peters, MO / 40 miles away from O Fallon, IL

This vehicle is a 2023 Buick Encore GX Preferred, with low mileage of 19,338 miles. It is equipped with a 1.2 liter 3 cylinder turbocharged engine, an...

Features and Specs:

30 Combined MPG (29 City/31 Highway)

Listing Information:

VIN: KL4MMBS28PB132142
Stock: P6599
Certified Pre-Owned: No
Listed since: 04-08-2025