" Big Enough To Deal, Small Enough To Care"

Orange County's Largest Chevrolet Buick GMC Dealer - Featuring 1511 Cars In Stock -

About Us

The Simpson family takes great pride in being family owned and operated since 1951. Three generations of Simpsons have paved the way to become the #1 GM Dealer in Orange County. Many of our employees have been with the dealership for over 20 years and our loyal customers date back to when the doors first opened.

On March 8, 1951, Mason ?Si? Sidney Simpson, grandfather of David Simpson, started the Simpson tradition in the city of South Gate with the General Motors Buick franchise. When Si passed away in 1976, the family legacy continued on through his two sons, Pete and Gary Simpson. In 1981 Pete passed away leaving Gary to continue the tradition. In 1992 Gary added the Oldsmobile franchise to the location which became Simpson Buick Oldsmobile. In March 1994, 43 years his grandfather started the business, David Simpson purchased the dealership from his father Gary.

In November 1998, David purchased a second location in Fullerton which gave him the Pontiac and GMC franchises. Two years later, Simpson Buick Oldsmobile and Simpson Buick Pontiac GMC moved into a brand new facility in Buena Park. David continued the expansion by purchasing the Garden Grove Chevrolet dealership in December of 2011, followed by a second Chevrolet franchise in Irvine in February of 2016.

With three GM dealerships in Orange County, we are dedicated to provide our communities with the services they need and the attention to detail that we have been known for since 1951.

  • Award Winning Sales and Service
  • Beautiful Showroom
  • Clean,comfortable Service lounge
  • Great location

We would like to thank you for visiting our website and considering us for the purchase of your next new or pre-owned vehicle. It is our goal to provide you with an excellent purchase and ownership experience. We are an Orange County car dealer committed to providing outstanding customer service for years to come. We know that you have probably had experiences with other Orange County car dealerships, but we want you to know that we are different - in a good way!

Let us introduce you to our staff, show you some of our special vehicle offers, and take you through our complete line of new and pre-owned inventory. We can help you find exactly what you are looking for. We promise you that you will love your visit to the car dealer. Orange County residents and employees will be treated with respect and care – before, during, and after your purchase. Our sales, parts, and service department shares a common goal: to make Simpson Buick GMC the best Orange County car dealer possible.

We know your time is valuable. We are sure you will find our site a fast and convenient way to research and find a vehicle that's right for you. If we can be of any assistance while visiting us online, send us an email and we will promptly reply. We also know that you may be shopping several Orange County car dealerships, and that is why we are prepared to earn your business the right way! We want to be more than just a car dealer. Orange County deserves the best, and that is why we aim to be the best.

Again, we thank you for visiting our website and we hope that you find everything you're looking for. Feel free to call us or email us while you're shopping online. Our team is available during business hours to assist you and answer any of your questions. So don't hesitate to ask, and please, enjoy your visit.