| Business | Phone |
| Auffenberg Chrysler-Dodge 176 Auto Ct, O Fallon 62269 | (618) 624-2277 |
| Auffenberg Dealer Group 115 Regency Park, O Fallon 62269 | (618) 632-0090 |
| Auffenberg Ford North 115 Regency Park, O Fallon 62269 | (636) 533-0862 |
| Auffenberg Dealer Group 1708 New Car Dr, O Fallon 62269 | (618) 622-4500 |
| Auffenberg Hyundai 1300 Central Park Dr, O Fallon 62269 | (618) 622-9001 |
| Auffenberg Mitsubishi 141 Auto Ct, O Fallon 62269 | (618) 624-2277 |
| Auffenberg Nissan 1690 New Car Dr, O Fallon 62269 | (618) 624-2277 |
| Auffenberg St Clair Auto Mall 105 Auto Ct, O Fallon 62269 | (618) 624-2277 |
| Streif Auto Sales 201 E State St, O Fallon 62269 | (618) 628-1606 |
| Jack Schmitt Chevrolet 127 Regency Park, O Fallon 62269 | (618) 628-2500 |
| Jack Schmitt Cadillac Olds 915 W Us Highway 50, O Fallon 62269 | (618) 632-1000 |
| Newbold Toyota Bmw Scion 1282 Central Park Dr, O Fallon 62269 | (618) 628-7000 |
| Meyer Honda 1268 Central Park Dr, O Fallon 62269 | (618) 622-0588 |