Welcome to MHZ Auto in Tracy, CA At MHZ Auto, we carry only the finest quality used cars, trucks, and SUVs available in the Tracy, CA area. Our knowledgeable sales representatives are committed to providing you with a "no-pressure" buying experience. We want to make sure you find the vehicle that meets your needs and fits your budget. Stop by our dealership today or view our inventory online. INSTANT DMV Vehicle Registration Renewal Renew your vehicle registration online in a just a few clicks. We can help you quickly renew or replace your California or Out of State vehicle registration.