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Welcome to Mark Christopher Auto Center
Ontario's #1 Volume GM Dealer
Welcome to Mark Christopher Auto Center, California's #1 volume GM dealer and the Inland Empire's most trusted source for new Buick, Chevrolet, GMC vehicles. Located at 2131 Convention Center Way in Ontario, CA, we have been family-owned and operated for over 50 years, serving drivers from Rancho Cucamonga, Riverside, Fontana, Los Angeles, Anaheim, and throughout Southern California. Our commitment to competitive pricing, genuine customer service, and deep community investment has made Mark Christopher a household name across San Bernardino, Riverside, Orange, and Los Angeles County.
Shop New Buick, Chevrolet, GMC Vehicles in Ontario, CA
With one of the largest GM inventories in the state, Mark Christopher Auto Center gives Southern California drivers access to the full 2026 Buick, Chevrolet, GMC lineup under one roof. Whether you're configuring a Chevrolet Silverado 1500, cross-shopping the Traverse and Tahoe for family duty, or exploring the electric lineup with the Chevrolet Equinox EV or Blazer EV, our inventory has the trim, color, and package you're looking for. Browse our full new inventory and check out our must-see deals for current incentives.
Quality Pre-Owned Vehicles for Every Budget
Mark Christopher maintains a carefully inspected pre-owned inventory spanning a wide range of makes, models, and price points. Every used vehicle on our lot has been rigorously inspected and reconditioned before hitting the showroom floor. Budget-conscious shoppers can filter by price with our used vehicles under $25,000 collection, or check our latest pre-owned specials for additional savings.
Auto Financing for All Credit Profiles
Our finance center is staffed by experienced F&I specialists who work with a broad lender network to structure competitive loan and lease terms for buyers at every credit tier. Apply for financing online before your visit, or use our trade-in tool to get a market-based estimate on your current vehicle. Businesses across the Inland Empire also rely on Mark Christopher for commercial fleet financing on Buick, Chevrolet, GMC work trucks and cargo vans.
Expert Service & Genuine GM Parts
Our relationship with customers extends well beyond the sale. Mark Christopher's factory-trained, GM-certified technicians handle everything from routine oil changes and tire rotations to complex diagnostics, transmission service, and collision repair through our dedicated collision and body shop. Need work done on your schedule? Our mobile service brings certified technicians directly to you. Genuine GM parts are stocked on-site and available to order online. Check our current service and parts specials and schedule your appointment online today.
Proudly Serving Southern California for Over 50 Years
Mark Christopher Auto Center has contributed more than $11 million to local charities, nonprofits, and community organizations across the Inland Empire, because we believe a great dealership is measured by more than the vehicles it sells. Whether you're visiting from Pomona, Upland, San Bernardino, Moreno Valley, or anywhere across Southern California, our team is ready to deliver a completely personalized shopping experience. Contact us or stop by our Ontario showroom and experience the Mark Christopher difference today.
Our Reviews
Leased 2 cars over the years. Recently had an issue and was ready to turn my lease in early and go to a different dealer, however, management took care of the issue completely. More than I could have asked. They truly cared and make it right. The way they handled it has definitely won me over to keep coming back here.
I wasn’t very pleased with my service my first concerns? Was that my AC is not working and I had to return the car after because my air-conditioning wasn’t working at all. M. C. Services were unable to repair due to obsolete parts, which ended up being the wrong diagnosis. I was able to get my AC fixed by independent service and it was my AC compressor that was leaking and needed to be replaced.
Once again a great experience all around. From Greg to JC, the entire team makes it so easy to continue doing business here. Thank you Mark Christopher team!
Never had to wait so long for an oil change in my life the it took approximately 25 minutes to get my vehicle after paying
I came in for a scheduled service for my vehicle and it was a great experience. Nobuy Damon was courteous, professional, and provided consistent communications and updates during the whole process. Additionally, the loaner department was great too! Bravo for this dealership.
I just got my truck out of the shop. Had an electrical issue and Tony Lopez helped me out big time. Kept me updated on the repairs. I was down for about 2 days, but with electrical problems, I was expecting to be down longer. I appreciate all the hard work. Thank you for getting my Silverado back to me.
My vehicle is still under warranty. I’ve had it in there a few times and I think the service department is done a great job. Avo has been an exceptional person to help with my problems. I would recommend others to go to this auto center.
The service here is absolutely great! Avo Injoan provided wonderful service and was incredibly helpful throughout my visit. I am so grateful for the excellent care and assistance. Thank you!
These folks went way above and beyond my expectations. They even helped my daughter out who lives in Northern California. They were able to get her fuel fuel injected issue repaired under warranty after being quoted $2700 from an auto repair shop.
I had a very good experience with the service advisor Eddie. He was excellent at communicating with me from beginning to end. He made sure the parts for my repair were ordered and received prior to my service appointment, saving me multiple trips. It was a pleasure not to have to track him down or wonder about status. He was proactive, he was interested in my input, he made sure I was satisfied with the service level including his. Thank you! You need more Eddies!
Fast service and very nice people.
For a first-time customer there was no communication on where to check-in outside or inside of service center. Other dealerships come out to greet customer and take keys etc. better info on appt email would be helpful. Agent did advise of wait time however, at the extended time better communication of car status if wait time has exceeded would also be helpful. Besides what was noted on paperwork, no one updated to what was included with service. Not upset just a new customer of Buick.
Brady was great! Easy going and pleasant. He was straight forward and really tried to get the deal i expected. I have purchased a few vehicles from Mark Christopher in the past and was leary because of the issues with the service department. Brady was able to address my concerns from previous experiences and satisfy me enough to purchase a new vehicle. Will be recommending to the family, for they are in the market for a new vehicle. Thanks Brady, I Love the new Cadillac Optiq.
Rami was awesome! A true professional! Greeted me and my family immediately and made purchasing a vehicle a breeze
Joel was awesome! He made sure sure our car buying experience was easy. Thank you Joel!