We take pride in being one of the most trusted and largest automotive dealers in Ontario, serving several drivers all over Ontario, Corona, Chino, Pomona, and Rancho Cucamonga. Mark Christopher’s dedication and efficient services to residents all over the LA area have earned us California’s number one Volume GM Dealer. Check out our achievements and accolades that include:

  • Edmunds Five Star Car Dealer Award Winner
  • Mark Christopher Fleet has been a family-operated and owned company for more than 40 years
  • We have assisted organizations, nonprofits, and local charities in raising over $2 million
  • We have the industry’s friendliest and finest auto financing professionals, qualified auto engineers, and salespeople
  • Our Ontario car dealership offers the best car exclusives in the state, such as GMC truck exclusives, Chevy lease deals, and also more incentives
  • San Bernardino County’s businesses choose us for financing their GMC and Chevrolet fleet vehicles and work trucks

Don’t think twice to check in with us at our Fontana car dealership for a fully customized shopping experience when you are looking to trade in your old car or buy a new one. You can explore an extensive collection of vehicles when you contact us, including GM’s Chevrolet and GMC commercial trucks and vans. Apart from that, you will also have help finding the ideal vehicle with our knowledgeable associates and convenient working hours at our showroom.

So, are you ready for your test-driving? If you are, contact our Riverside dealership at (909) 639-3053 to talk to one of the sales crew members. You can also get started by swinging by our GM dealership in Ontario at 2131 E Convention Center Way.

Selling Outstanding Range of Used Cars

At Mark Christopher Fleet, we are proud of our used vehicle selection as a Rancho Cucamonga full-service car dealer. We ensure to meticulously inspect, recondition, and price all pre-owned trucks for sale with our efficient and experienced experts at Mark Christopher Fleet. People can also rely on us to help them make more out of their swap when taking up the latest GM vehicles or any pre-owned vehicles.

See the quality Mark Christopher Fleet offers by browsing through our Ontario range of used vehicles for sale.

Get More Value for Shopping at Mark Christopher Fleet

Experience a completely new car shopping at our Chino Hills, CA, used and new dealership, including auto repairs and financial assistance. We offer credit-challenging financing options, and you can learn about it by contacting our finance department. You can also contact us for service through our website.

You can access a treasure of resources we made available on our accessible website. Before you make your way to our location in Ontario, we encourage Rancho Cucamonga and Corona drivers to browse through our site. Mark Christopher Fleet is here to assist you no matter your auto needs!


Joe Gonzalez

Joe Gonzalez is our Fleet Commercial Director and has been with Mark Christopher Auto Center since 2010. The first Chevy that Joe had was a Silverado and he is currently driving a another Silverado. He grew up in La Puente, CA and graduated Rio Hondo College. His favorite sports team is the Los Angeles Dodgers, favorite movie is Gladiator and favorite music artist is Vicente Fernandez. The first job that he had was washing car’s at a body shop in Monrovia, CA. Joe also manages the store softball team . On his days off he enjoys spending time outdoors with his wife and kids.

JT Trimble

JT has been a proud member of the Mark Christopher team for over 4 years and has over 14 years of experience in the industry. He has a background in construction and heavy equipment operations. He is a graduate of Mt. San Antonio Collage and has a Private Pilot’s License. He currently drives a Chevrolet Silverado 1500 Trail Boss and enjoys taking it off road. His favorite sports teams are the LA Dodgers and Rams. He is also the captain of the store’s softball team, and likes to play golf.

Johnny Mendoza

Johnny Mendoza is a Commercial Fleet Manager and has proudly been working at Mark Christopher since 2011 and has been in the auto industry since 2008. He was currently driving a GMC Sierra Elevation, and his favorite sports teams are the Los Angeles Dodgers, Los Angeles Lakers, and the Dallas Cowboys. His favorite style of music is Lowrider Oldies, favorite movie is Indiana Jones and the Last Crusade. His first job growing up was washing cars after school and it is his love of cars that has always kept his attention to the auto industry. Johnny enjoys Traveling, Camping, Fishing, and most importantly spending time with his family.