STG Auto Group is your local used car dealer with a large selection of pre-owned vehicles for sale in Montclair, CA. Our used car dealership stocks used cars, trucks, and SUVs in various trim models and color combinations. Contact our used EV dealership if you're looking for a used hybrid or electric car. We'll appraise your trade-in vehicle and build a custom auto loan based on your credit rating, down payment, and vehicle selection. We offer competitive used car financing across our inventory.