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Mark Christopher Auto Center
Ontario, CA
11,080 Reviews
At Mark Christopher Auto Center our mission is to be a premier quality GM retailer in the Los Angeles metro - Southern California area; providing the best opportunities for our team members, customers, communities, and the manufacturer we represent. Feel free to come by the store at any time to meet us in person. We invite you to take a tour of our facility and enjoy a pressure free car buying experience.
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This rating includes all dealership reviews, with more weight given to recent reviews.
Sales Price Transparency
Service Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Workmanship
Service Time
Service Communication
Hours
Sales/Showroom
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 8:00 PM
Sunday 9:00 AM - 7:00 PM
Service
Monday 7:00 AM - 5:00 PM
Tuesday 7:00 AM - 5:00 PM
Wednesday 7:00 AM - 5:00 PM
Thursday 7:00 AM - 5:00 PM
Friday 7:00 AM - 5:00 PM
Saturday 8:00 AM - 12:00 PM
Sunday Closed
Parts
Monday 7:00 AM - 5:00 PM
Tuesday 7:00 AM - 5:00 PM
Wednesday 7:00 AM - 5:00 PM
Thursday 7:00 AM - 5:00 PM
Friday 7:00 AM - 5:00 PM
Saturday 8:00 AM - 12:00 PM
Sunday Closed
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Showing 6,641 service reviews
April 16, 2026
Had an unexpected issue with a software update in the 2023 Escalade. Service was quick, responsive, and helpful. Got the issue resolved and got me back on the road. Thanks. 2023 Escalade. Service was quick, responsive, and helpful. Got the issue resolved and got me back on the road. Thanks. More
by TONY@ALLIEDCRE.COM
Verified CustomerEmployees Worked With
Chris
April 16, 2026
Average dealer ship nice waiting areas but they take your entire life to don anything. Wait time are out of control. 2 weeks ago I waited 3 hours for an oil change. Where did you go for the oil the Middle Ea entire life to don anything. Wait time are out of control. 2 weeks ago I waited 3 hours for an oil change. Where did you go for the oil the Middle East? The other day had a 8:30 am appointment to have a new light installed my truck wasn’t ready until 4:30 pm wild! More
by Matt67227
Employees Worked With
April 16, 2026
Had *beyond* excellent care and service. I was waiting, and in exactly one hour from arrival for an oil change I was driving away in my clean truck. Fantastic I was waiting, and in exactly one hour from arrival for an oil change I was driving away in my clean truck. Fantastic More
by kevin.webb
Employees Worked With
April 16, 2026
Juno provided excellent service. I was very pleased. He communicated well with me & always kept me informed about the status of my car I was very pleased. He communicated well with me & always kept me informed about the status of my car More
by LEYVABEAR2
Employees Worked With
April 15, 2026
Friendly staff. The vehicle was well taken care of with all concerns addressed. Attentive management team. The vehicle was well taken care of with all concerns addressed. Attentive management team. More
by ltoons07
April 15, 2026
Favian was a great worker and very helpful definitely will be back in the future will be back in the future More
by LUKEWEAVER20
Employees Worked With
April 14, 2026
Service was great. Was glad they met our needs and provided a loaner car during our service. They took their time and fulfilled the job. Was glad they met our needs and provided a loaner car during our service. They took their time and fulfilled the job. More
by CHERI179
Employees Worked With
April 14, 2026
Eddie Brady provided outstanding service at Mark Christopher Auto Center. He was attentive, professional, and made the entire process smooth and stress free. He took the time to explain everything a Christopher Auto Center. He was attentive, professional, and made the entire process smooth and stress free. He took the time to explain everything and made sure all my needs were met. I truly appreciate his help and would highly recommend asking for Eddie Brady if you’re visiting. Great experience overall. More
by soto12
Employees Worked With
Eddie Brady
April 12, 2026
I am writing to express my frustration and disappointment with the recent service on my vehicle. My car was at your GMC dealership for four days, yet the driver-side running board perimeter light was not re with the recent service on my vehicle. My car was at your GMC dealership for four days, yet the driver-side running board perimeter light was not repaired. This is not the first time I have experienced this issue. On multiple occasions, I was told that the problem had been fixed, but after returning home and checking at night, the light was still not functioning. I went to the Mark Christopher GMC dealership service department twice, and both times they said they repaired and verified the running board perimeter light, but it still isn’t fixed. I don’t understand what the mechanic actually checked. This repeated failure to properly diagnose and repair the issue is extremely concerning. At this point, I have lost confidence in the service provided at the Mark Christopher GMC dealership in Ontario. I expect a thorough and permanent resolution to this issue, as well as better quality control to ensure repairs are actually completed before returning the vehicle to the customer. Please address this matter promptly. More
by JAY C.
Employees Worked With
Service department
