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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
Great people working here! Mario internet sales, Cesar finance and Albert manager!! Always a great experience!
Awesome service department friendly employees clean and comfortable waiting room not to bad waiting time
Excellent customer service. My service person was very knowledgeable and very professional. vehicle was promised on time also.
Jose helped me find what I needed and what fit my budget withing minutes. I am beyond satisfied with his help.
Very helpful staff. Even the salesman, Brady, helped out a lot. Even had the guys detail my new truck, took awhile but with waiting for them to finish it up and drive off the lot looking clean
Avo was a great help and transparent throught the whole process of having my headlight replaced
I have bought many new cars in the past from other dealerships but this time I felted the need to share my experience, Thomas Bautista Sales Rep was super helpful and very patient with all my questions on my new purchase also Cesar in Finance was super helpful, Thank you for having such amazing team...Will definitely be returning and recommending Thomas to my friends and family
Great people working here Mario internet Sales, Cesar in finance, and Albert manger. We have bought several cars from this dealership and always had a great experience. We definitely recommend them!
Thank you for reaching out. I am extremely grateful for the excellent service that was provided and the timeliness it was provided. Nobu was very professional, very courteous, and compassionate about understanding that I needed transportation for work. He took the time to explain the process clearly, was honest with his time estimation, and took the time to keep me updated on a daily basis to let me know the status of my car which helped me to trust that the dealership was doing everything they could to move my car forward. He and his customer service is "A++" and I cannot put into words how truly grateful I am for that. The only thing that was disappointing was not being able to have a loaner car available when not knowing how long my car would take for the week that I was without transportation. Although I know it's not required, I cannot begin to tell you how much a loaner car is of value when you have to figure out how to get to work. Nobu made the whole process easy. I will definitely bring my car back and tell my friends about your shop. Thanks again!
Highly recommend Tony in the Service Department. He was very pleasant and took the time to answer all of the questions I had about my truck and the services needed. He directed me to all of the amenities while I waited. The service time he quoted was spot on. Checking in and out was easy. If you need service, go see Tony!
Excellent help and service both at the dealership as well as with home delivery and setup!
Avo is a great service writer, service is fast and he is very responsive Great to work with
Chelsea is reliable and communicative, tech maintenance staff not reliable, new damages after repairs, vehicle back in service for new damages after just a couple of days out from service, issues in the past with customer service by an agent named Oscar. He’s no longer there. Management had contacted us from previous service issues, promised some kind of compensation never heard back, which I’m not looking for a handout I’m looking for reliable service.
Great experience took time to explain everything and make sure we left with a car.
Took 3 hours for a $200 oil change with an appointment. I waited at the dealership and they failed to notify me when the car was finished even after I asked. It's almost like they made me wait on purpose.