Contact Quantum Auto Sales

We’re Here to Help – Wherever You Are in Your Car-Buying Journey

Have a question about a vehicle? Want to schedule a test drive or get pre-approved for financing? Thinking about trading in your current car? The team at Quantum Auto Sales is ready to assist—online, by phone, or in person.

With three convenient locations in Garden Grove, Santa Ana, and Escondido, we proudly serve drivers from across Southern California. Whether you're just starting your search, exploring financing options, or ready to drive off the lot today, you’ll find friendly, knowledgeable professionals ready to support you every step of the way.

We understand that buying a car is a big decision, and we’re here to make it easy. From our no-pressure sales approach to our fast and flexible financing, we work hard to make your experience simple, transparent, and stress-free. We take the time to listen, answer your questions, and help you find the right fit—without the runaround.