Greg Hess
Internet Sales Director
Mark Christopher Auto Center
2131 E Convention Center Way
Ontario, CA 91764
Love to give Great Experiences and gain raving fans...
Read moreDealership Experience
16 yrs, 2 mos
Industry Experience
18 yrs, 6 mos
451 Reviews
Write a Review451 Reviews of Greg Hess
July 21, 2026
Mark Christopher Auto Center has very friendly, professional, and knowledgeable staff. Everyone is willing to assist and make sure your experience is top notch. professional, and knowledgeable staff. Everyone is willing to assist and make sure your experience is top notch. More
Other Employees Tagged: Jason Ho, Jeff Rizzi, Nate Heath, Lloyd Beardsley, Frank Vera
July 18, 2026
They did a great job with customer service. They were very attentive and willing to work with me for a gift with a new car for my wife. 10 star service! They were very attentive and willing to work with me for a gift with a new car for my wife. 10 star service! More
Other Employees Tagged: Alex Sarabia, Frank Vera
July 17, 2026
Mark Christopher was very helpful and accommodating in the purchasing my vehicle. Mario Sanchez helped me very much as well as Greg Hess. the purchasing my vehicle. Mario Sanchez helped me very much as well as Greg Hess. More
Other Employees Tagged: Mario Sanchez
July 16, 2026
Everyone I worked with was so friendly and helpful. I would definitely go back there for my next car. I would definitely go back there for my next car. More
Other Employees Tagged: Jason Ho, Mario Sanchez
July 09, 2026
Jose Enciso was great, he made me feel comfortable throughout the entire process of buying a new car. Kept me informed and up to date with the ordering process. I’m loving my new Cadillac CT5-V, and throughout the entire process of buying a new car. Kept me informed and up to date with the ordering process. I’m loving my new Cadillac CT5-V, and will be advising anyone looking for a new ride to go and see Jose. Awesome experience. Thanks again Jose!! More
Other Employees Tagged: Jose Enciso
July 04, 2026
I was looking for a particular vehicle, and I didn’t find an exact match for what I was looking for. So Jose and Greg helped me order the exact one I wanted. Great experience. Cadillac CT5-V an exact match for what I was looking for. So Jose and Greg helped me order the exact one I wanted. Great experience. Cadillac CT5-V More
Other Employees Tagged: Jose Enciso
July 01, 2026
Excellent experience. Armando was attentive even on his day off. Mario was just the best salesperson we could ask for. Greg Hess really helped make the entire process smoo Armando was attentive even on his day off. Mario was just the best salesperson we could ask for. Greg Hess really helped make the entire process smooth without any roadblocks, and even found additional rebates I did not know about! More
Other Employees Tagged: Armando Nuno, Mario Sanchez
June 29, 2026
1 Star – Disappointing experience after reaching an agreed price and attempting to complete the purchase I am writing this review to share my experience with Mark Christopher Auto Center regarding a agreed price and attempting to complete the purchase I am writing this review to share my experience with Mark Christopher Auto Center regarding a 2015 GMC Canyon SLT 4WD Crew Cab: I live about two hours away and made it clear from my first communication that I needed the true out-the-door (OTD) price before making the drive. The dealership provided a breakdown showing the vehicle price, DMV fees, documentation fee, taxes, and no additional add-ons. The original OTD price provided was approximately $27,026. After discussions, I made an offer of $25,000 OTD, explaining that while the truck had low miles, it was still a 10+ year old vehicle. I later increased my offer to $25,500 OTD. Mario Sanchez contacted me and stated he spoke with management. His exact words were: "And You Win" Based on that communication, I believed my offer had been approved and we were moving forward. I was ready to purchase and was not asking for anything else. I immediately left work early and went to my credit union. I provided proof of pre-approval and explained that I wanted to use my own financing. The only thing needed was a proper purchase order so my credit union could issue the check. Greg Hess agreed to provide the purchase order. The PDF sent to my credit union and me contained blank pages with a vertical black line on the side. My banker reviewed it and confirmed the document was unusable. I immediately notified the dealership and requested a proper signed purchase order. The next morning, after being asked if my credit union received the paperwork, I explained we only received blank pages. I was told it would be resent. Shortly afterward, I received this message: "I just checked looks like that truck sold last night." I was then offered a different vehicle. The disappointing part is that I had: Received confirmation that management approved my $25,500 OTD offer Left work early Gone to my bank Provided financing approval Worked with both my credit union and the dealership to receive the proper paperwork After being told the Canyon had sold, I checked the listing and it was still showing available. I also had another person submit an availability request and they received 2 responses indicating the vehicle was available. I was told the dealership system would update when third-party sites refreshed. I understand vehicles sell and that a purchase is not final until paperwork is signed. My issue is the communication and process. I was actively trying to complete the purchase, but the paperwork needed from the dealership was not properly sent and there communication stopped until the morning, and shortly afterward I was told the vehicle was sold. This review is based on my experience and the written communication I received from the dealership. More
Other Employees Tagged: Mario Sanchez, Frank Vera
May 24, 2026
The transaction was a pleasure and couldn’t have been any smoother, I would highly recommend purchasing from MC Auto. smoother, I would highly recommend purchasing from MC Auto. More
Other Employees Tagged: Armando Nuno
May 21, 2026
I brought it in for a recall they assured me it would take one day to fix it. I picked up my car because they said it needs parts and that they would take three weeks to get there. It is now been three w take one day to fix it. I picked up my car because they said it needs parts and that they would take three weeks to get there. It is now been three weeks and I have not gotten a phone call nor email about my car. More
Other Employees Tagged: Nate Heath, Lloyd Beardsley

