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Mark Christopher Auto Center
Ontario, CA
11,371 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 6,786 service reviews
July 23, 2026
This was my second time scheduling an *appointment* for them to tell me it’s gonna take 2 and a half hours plus because they’re backed up and lunch is from 12-1. If that’s the case why have open time slots them to tell me it’s gonna take 2 and a half hours plus because they’re backed up and lunch is from 12-1. If that’s the case why have open time slots to be confirmed for appointments even during lunch hours. And since when does an oil change take 2 hours plus. After my first appointment being told this information I was convinced to reschedule especially considering I brought my young son and did not know it would take that long. They communicated with me that the weekend is first come first serve you don’t need an appointment. On Saturday I called at 3:15pm considering online it says they close at 8pm. The rude woman on the line tells me they stop taking walk ins at 3pm because they close at 6pm and they’re closed on Sunday. At this point I feel as if the workers just created their own work schedule to what’s convent for them. This location is not focused on any customer service satisfaction. When I walked in for my second attempt of my confirmed appointment at 10am, the worker told me it would be done till after lunch. That’s waiting four hours for a scheduled appointment for an oil change. After I got a text confirming my vehicle was completed it took the employer 1 hour to find my keys and pull up my vehicle. I will never return to this location or advise anyone to waist there time. More
by celesteduarte03
Verified CustomerEmployees Worked With
July 19, 2026
Great service, friendly people, and reasonable pricing. It restores my confidence in servicing my car with the dealership. It restores my confidence in servicing my car with the dealership. More
by syscooper1
Employees Worked With
July 18, 2026
Excellent experience. They worked with me with my trade in and I got the exact truck I wanted. They worked with me with my trade in and I got the exact truck I wanted. More
by avillalobos13
Employees Worked With
July 18, 2026
Great communication and explanation of the issue with my vehicle. Mark Christopher has helped me getting repairs covered eventhough my vehicle was out of warranty on past issues. I will continue using them vehicle. Mark Christopher has helped me getting repairs covered eventhough my vehicle was out of warranty on past issues. I will continue using them as my service center. More
by mtmi6939
Employees Worked With
William Sanchez
July 17, 2026
I love taking my vehicle to Mark Christopher for service. They are so helpful, love to talk about the issue I am having so they understand. So friendly. Chelsea has been very helpful from day one of my purc They are so helpful, love to talk about the issue I am having so they understand. So friendly. Chelsea has been very helpful from day one of my purchase. She calls to see how I am do I am doing and if my vehicle is running ok. Great communicator. They do a great job, area is always clean. More
by fireprotection4u
Employees Worked With
July 16, 2026
The service dept was super communicative and they quoted me 2.5 hours but it only ended up taking 1 hour. Chris was great in that he communicated with me early in the morning regarding the fact that they di me 2.5 hours but it only ended up taking 1 hour. Chris was great in that he communicated with me early in the morning regarding the fact that they did not have an loaner vehicles on hand. That was disappointing, but overall, not a dealbreaker as I understand that since my service only took a few hours it wasn't as necessary. Overall, however, Chris was proactive and followed up accordingly to ensure everything was okay. More
by micohoe
Employees Worked With
Chris
July 16, 2026
The service area waiting room was very clean and inviting with drinks and snacks. The cashiers were very helpful in loaning me their charger for my phine. with drinks and snacks. The cashiers were very helpful in loaning me their charger for my phine. More
by DEBMODICA
Employees Worked With
July 16, 2026
The service attitude is really good! Not only professional, but also very patient. It makes me feel very warm, and it also increases my trust in your Cadillac brand.！ Not only professional, but also very patient. It makes me feel very warm, and it also increases my trust in your Cadillac brand.！ More
by zhangyan5460
Employees Worked With
Chris
