2131 E Convention Center Way
Ontario, CA 91764

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Sales: 855-965-3098

Used Cars: 855-638-1065

Hours Toggle

Sales Department

Sun 9:00am – 7:00pm
Mon 9:00am – 8:00pm
Tue 9:00am – 8:00pm
Wed 9:00am – 8:00pm
Thu 9:00am – 8:00pm
Fri 9:00am – 8:00pm
Sat 9:00am – 8:00pm

Service Department

Sun Closed
Mon 7:00am – 5:00pm
Tue 7:00am – 5:00pm
Wed 7:00am – 5:00pm
Thu 7:00am – 5:00pm
Fri 7:00am – 5:00pm
Sat 8:00am – 12:00pm

Reviews of Mark Christopher Chevrolet Buick GMC Cadillac

Overall Rating:

4.6 (out of 5)

87% recommend this dealer

11234 total reviews

Showing the most recent reviews from Cars.com and DealerRater.

5.0 (out of 5)

The actual service was perfect.

Reviewed by dellab11February 05, 2026

The actual service was perfect. It’s just that you had my car all day and the GPS system is not fixed nor do you have a timeframe when the parts will be in, very disappointed in that I purchased a car that I haven’t been able to use the system now for about seven months.

  • Does recommend this dealer
  • Came in for service or repair

Dealer Response

Thank you for sharing your experience. I’m glad to hear that the service itself was handled well. I also understand your concern about the GPS system and the wait for parts, and at Mark Christopher Auto Center, we work to keep customers updated on repair timelines and vehicle functionality. Your feedback helps us improve communication and planning for longer repairs. If you’d like to talk more about your vehicle, please feel free to contact me directly. Your satisfaction is very important to us. Sincerely, Jeff Rizzi | jrizzi@markchristopher.com | 909-975-3932

Overall Experience 5

Customer Service N/A

Quality of Repair N/A

Friendliness N/A

Pricing N/A

Maximum rating = 5

5.0 (out of 5)

José Encino made the whole process smooth, ensuring I

Reviewed by pvtransports49February 05, 2026

José Encino made the whole process smooth, ensuring I felt comfortable throughout. The customer service was top-notch, and I'll be returning!”

  • Does recommend this dealer
  • Shopped for a new car

Dealer Response

Thank you for your great feedback! I'm pleased to hear that José made your experience at Mark Christopher Auto Center smooth and comfortable. Our team strives for top-notch customer service, and it's great to know we met that standard for you. We look forward to seeing you again on your next visit! Lloyd Beardsley General Manager lbeardsley@markchristopher.com

Overall Experience 5

Customer Service N/A

Quality of Repair N/A

Friendliness N/A

Pricing N/A

Maximum rating = 5

2.0 (out of 5)

It was very difficult to get in touch with Mr.

Reviewed by valleyvistaconstructionFebruary 04, 2026

It was very difficult to get in touch with Mr. Javier. Even after the manager assured me he would follow up with me the next morning, I never received a response. I am not pleased with the level of customer service provided.

  • Does not recommend this dealer
  • Came in for service or repair

Dealer Response

Thank you for sharing your experience with us. I understand your concerns regarding communication with our team at Mark Christopher Auto Center. Your feedback is valuable, and I appreciate you bringing this to our attention. Please feel free to contact me directly if you’d like to share more details or continue the conversation. Your input is appreciated. Lloyd Beardsley General Manager lbeardsley@markchristopher.com

Overall Experience 2

Customer Service N/A

Quality of Repair N/A

Friendliness N/A

Pricing N/A

Maximum rating = 5

About Mark Christopher Chevrolet Buick GMC Cadillac

Mark Christopher Auto Center is the largest Chevrolet Buick Cadillac and GMC dealer in California! Being centrally located in Ontario CA. allows us to easily serve the Los Angeles metro area. Family owned and operated since 1972 with a friendly staff who can help you find your next new Buick car used Cadillac or any GM car truck or SUV. If you're coming from LA Riverside or Rancho Cucamonga to view our vast selection of Chevy cars or GMC trucks you'll see from our hours and directions page we are easy accessible from Interstate 10. Conveniently located near Ontario Airport also offering free airport shuttle service.

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