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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, Cadillac, 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, Cadillac, 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, Cadillac, 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, Cadillac, 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
After reviewing my contract, I noticed I did not received all of the savings for the vehicle I purchased
I am always well taken care of when I come in. Everyone I’ve encountered has been very helpful and kind and courteous.
Neither Cadillac nor XT5 is listed on this dealer rater survey. Did someone forget that the Mark Christopher Auto Center also sells Cadillacs????
Jose was so awesome and very easy to deal with no hidden fees and would work with your budget. They also have amazing deals out here.
I had an excellent experience working with DEVIN RANGEL at Mark Christopher Auto Center! Devin was friendly, knowledgeable, professional, and incredibly helpful throughout the entire process. He made everything smooth and stress-free, answered all my questions, and made sure I felt comfortable every step of the way. His customer service was outstanding, and he truly went above and beyond to make the experience a great one. I highly recommend asking for Devin Rangel if you’re looking for a great car buying experience. Thanks, Devin, for the excellent service!
Devin Rangel Internet manager was absolutely awesome! Helped us get into our brand new hummer EV! Extremely grateful and had an excellent experience! will be recommending family and friends to him and mark christopher!
Dealership experience was fine just a couple delays in the process of getting things done in timely manner I was told it would take one day to get my interior done and then they switched it to 3 days and got it wrong the first time the I was told my car was gunna get detailed and get my tank filled for the inconvenience but that didn't happen neither and took about 6 days there the second time . Also have not received my points on the gm app or tags in the mail yet so I can put my custom license plates on
Chelsea is a great person to work with. She’s extremely knowledgeable in her field. It’s been a breeze to get in for service through text or call. She’s personable and poignant. I won’t go anywhere else for our Cadillac service and they have earned me as a lifelong customer for all future sales.
The service people are nice and welcoming. I gave three stars because I could not get a update on my vehicle. I called multiple times and finally talked to a manager. He got me the update I needed. After I got the update, the communication was much better.
Nobu was very helpful and kept me informed throughout the entire service process. His communication and excellent customer service made the experience smooth and stress free. Thank you, Nobu!
I needed to get a car fast after losing mine in a car accident. I tried other dealerships and the guys here were head and shoulders above the others! It was a fantastic experience overall! Alex Sarabia was very thorough in explaining the car and its features and he was very friendly.
Really great people! They are very helpful and made me feel comfortable about my decision.
When my vehicle was brought to be when the service was done, my steering wheel had grease or oil marks. When I asked the guy about it he said it was like that when he brought it from the shop. So I went to the service area and everyone there just kept pointing fingers at each other not saying who to talk about this
It went well I wouldn't take my vehicle anywhere else