Listed In: Used Car Dealers, All Terrain Vehicles
Driven by trust and powered by experience, Quantum Auto Sales is more than a used car dealership-it's your Southern California automotive partner. Located in Escondido, we've earned a reputation for honesty, quality, and customer satisfaction by helping thousands of drivers find vehicles they can… Driven by trust and powered by experience, Quantum Auto Sales is more than a used car dealership-it's your Southern California automotive partner. Located in Escondido, we've earned a reputation for honesty, quality, and customer satisfaction by helping thousands of drivers find vehicles they can depend on. Every car, truck, SUV, hybrid, and EV on our lot is hand-selected, inspected, and maintained to meet our high standards-because we only sell vehicles we'd drive ourselves. Whether you're seeking efficiency, performance, or family comfort, our diverse inventory and transparent buying process make it easy to find the right fit. What truly sets us apart is our team: friendly, knowledgeable professionals who provide guidance without pressure. With flexible financing, clear communication, and a commitment to your satisfaction, Quantum Auto Sales ensures every customer drives away confident, informed, and supported long after the sale. Read more
By Christopher Sakellis on September 7, 2026 Verified by Google
Adam was awesome. Extremely professional and transparent thru the entire process. From beginning to end I truly enjoyed working with him. Me being in the business of sales. I respect another salesman that takes his job as seriously as he does. Was a pleasure Adam. Many referrals coming your way brotha!
By Georgina Valdez on July 25, 2026 Verified by Google
Turned down at every dealership... until I came to Quantum Auto Sales! 🙌
Adam made the entire process smooth, stress-free, and actually enjoyable. Hands down the easiest car-buying experience I've ever had.
If you're tired of getting the runaround, skip the other dealerships and head to Quantum Auto Sales. Ask for Adam—you won't regret it!
I'm beyond happy and grateful with my purchase. Thank you, Adam and the Quantum Auto Sales team! 🚗🎉
By Miguel S on June 19, 2026 Verified by Google
I've been having a hard time getting approved. After 5 dealerships decided to give this one a try. Very fortunate to get approved here. Thank you Mikey and also to Eddie for making it happen. Make sure to ask for them when you go in.
By Sdcaligirl007 on April 14, 2026 Verified by Google
I had the pleasure of dealing with Mikey and I was in desperate need of a car and he had a beautiful Toyota Camry that I fell in love with it was so easy to work with these gentlemen the company is very kind. They make things really simple and unlike some other car dealerships that you’re there for like almost all your day. I got in there and got out of there in less than three hours, and that’s pretty good but I’m telling you if you go in you gotta talk to Mikey he really knows what he’s doing and very good employee so if bosses out there, listen to me boss give this guy a raise he’s a Very professional and I buy another car from him anytime- and it only had 60,000 miles on it. It was a Toyota Camry and beautiful condition not a scratch on it. I love it only had one owner. Thanks again Mikey for making my day.😇😇
By Eric Hare on March 4, 2026 Verified by Google
I want to just say that Mike at Quantum is an awesome salesman. He helped me get into the right car which was a suv with low low miles. He was patient. He wasn’t pushy. And he was knowledgeable about every car that he had. I felt like I was talking to a friend instead of a salesman. The whole team was welcoming and friendly. I highly recommend Quantum for anyone searching for a car.
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Quantum Auto Sales, Inc. 4.7 out of 5.0 based on 723 user reviews.
1439 West Main Street, Alhambra, CA (145 Km Away)
79225 CA-111, La Quinta, CA (99 Km Away)
5900 Sycamore Canyon Boulevard, Riverside, CA (93 Km Away)
4.7 
