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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
Overall my experience was good. My only disappointment was the lack of communication regarding a transmission leak or “seepage that I noticed indicated on the service order after I got home. It wasn’t mentioned to me when my oil change was completed so I don’t know the seriousness of it and will need to follow up.
Bryan fue una persona muy atenta y resolvio todas mis dudas tambien me ayudo a buscar lo que yo queria
Nobu has proven time and time again to be the reason why I keep bringing my cars back to Mark Chris for service. He is the best of the best at his job!
Dante Zeta was excellent from our initial phone conversation to assisting at dealership. He WAS EXCELLENT AND DESERVES A RAISE. However, all thoroughly disappointed in the finance office. I was there for 3 1/2 and a wasted afternoon, even though the vehicle was already preselected and I was paying cash.
The process was easy and smooth !!! My rep was amazing and sweet I love the whole process
Juan was supportive and communicated the whole time my truck was being serviced. Continuously updated me every step of the way. Made the experience easy.
Brady provided all the numbers straight up no back and forth. Then we completed the purchase portion in finance under 20 mins no messing around which I liked very much.
Juan, my service contact was pleasant. The dealership is extremely understaffed and overworked. My frustration lies more with GMC as a product. I had a 2020 Sierra 1500 with 48k miles and the transmission was done. I don't haul anything or drive harshly. The truck was there for nearly a month due to waiting on parts and technician availability. I later discovered I had to ask for a loaner car instead of it being offered, knowing it would take an extended amount of time. The communication was fair after I had to initiate it for status updates. It came via texting which was helpful to receive information but flat and final in delivery. There was some assistance financially through GMC but no explanation on why a certain amount was provided or not other than they decide. As a newer vehicle with low mileage, this is the second time a significant repair has been made. The A/C compressor went out about a year ago. Surprisingly, all these repairs came after the warranty expired. Overall, the experience was average but left me with a sense of disappointment and distrust.
They didn't put my license plate holder on front bumper it was in the do bill I calling them about it and no call back about it they don't care
Brady was great to work with as he provided the information straight and didn’t go round and round like other dealers.
My husband is usually the one who takes the car in for service, and he always speaks very highly of Juan. He’s worked with a few people at Mark Christopher, but Juan is the only person he prefers to work with. Juan consistently goes above and beyond to ensure we receive exceptional service and that our time is respected. My husband especially appreciates how friendly, professional, and attentive Juan is, and how he consistently exceeds both our expectations and those of the company. We truly appreciate the outstanding service he provides!
This is my local dealership, Avedis always takes care of me! Great service always when I go!
Took it in for numerous concerns most of which unfortunately "couldn't be duplicated". I waited about 2months give or take for a possible loaner(initially mentioned was a 2 week wait), so had to contact cadillac, and my option was to drop off and get a rental on my own to get these things worked on sooner than later. Had my rear tail lights replaced due to a defect in both at the end. Still have an annoying rattling on rough roads on my dash and my transmission shifting is bit of a nuisance. Perhaps in the future it can be addressed. Had an oil consumption test started. So will be returning in about 900 miles from today. One thing I did note and waiting to hear back is some significant scuffs and scratches on one of my door pillars(drivers side) in the exterior which weren't there prior. My car was in for 2 weeks.
Bryan fue muy amable y entendio lo que yo queria tambien se tomo el tiempo y la dedicacio para mostrarme lo que tenian