| Business | Phone |
| Honda Degiro Inc 496 Av Saint-David, Montmagny G5V 4P9 | (418) 248-2133 |
| Lapointe Automobiles Inc 75 Boul Tache E, Montmagny G5V 1B6 | (418) 248-8899 |
| Montmagny Mazda 201 Boul Tache O, Montmagny G5V 4P5 | (418) 248-0014 |
| Montmagny Volkswagen 160 Boul Tache O, Montmagny G5V 3A5 | (418) 248-0057 |
| Montmagny Hyundai 150 Boul Tache O, Montmagny G5V 3A5 | (418) 248-7877 |
| Montmagny Toyota 140 Boul Tache O, Montmagny G5V 3A5 | (418) 248-2323 |
| Thibault Chevrolet Oldsmobile 500 Av Saint-David, Montmagny G5V 4P9 | (418) 248-7122 |