Gaston's sells Domestic and Import Cars, Trucks, Vans, and SUV's. To view our current inventory of used vehicles click here. In addition to the inventory we have listed, we have access to many more vehicles.Serving the ST. CATHARINES area, GASTONS AUTO SALES, located a 394 ONTARIO ST IN ST CATHARINES, ON., is your premier retailer of Preowned vehicles. Our dedicated sales staff and top trained technicians are here to make your auto shopping experience fun, easy and financially advantageous. more... See more text