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
15 yrs, 10 mos
Industry Experience
18 yrs, 2 mos
436 Reviews
Write a Review436 Reviews of Greg Hess
March 17, 2026
From start to finish this whole deal was amazing. Sam Greg and Mario went above and beyond to try and cater to all my requests and needs with my vehicle purchase. The team's professional, thorough an Sam Greg and Mario went above and beyond to try and cater to all my requests and needs with my vehicle purchase. The team's professional, thorough and fair. I'm very thrilled with all of the service I was provided and look forward to sharing my experience with my family and friends thank you to the whole team. More
Other Employees Tagged: Sam Fakhouri, Mario Sanchez, Sam Abdelmesseh
March 12, 2026
Working with Greg and Mario made buying a car easy and enjoyable. I will absolutely refer my family and friends over to Mark Christopher Auto to work with Greg and Mario enjoyable. I will absolutely refer my family and friends over to Mark Christopher Auto to work with Greg and Mario More
Other Employees Tagged: Mario Sanchez
March 07, 2026
Greg and Armando are the best. I never had such a great car buying experience. Mark Christopher is my dealer for all future vehicle purchases I never had such a great car buying experience. Mark Christopher is my dealer for all future vehicle purchases More
Other Employees Tagged: Armando Nuno
February 27, 2026
Great experience! Made the process so easy. No false advertising, price, available incentives were clear before we even arrived, and had all the paperwork ready to go. Made the process so easy. No false advertising, price, available incentives were clear before we even arrived, and had all the paperwork ready to go. More
Other Employees Tagged: Sam Fakhouri, Frank Vera , Cesar
February 21, 2026
Great customer service. They were really eager to make sure I got the deal I wanted. They were really eager to make sure I got the deal I wanted. More
Other Employees Tagged: Armando Nuno, Mario Sanchez
January 20, 2026
Fantastic customer service! Went above and beyond to make sure I was taken care of Went above and beyond to make sure I was taken care of More
Other Employees Tagged: Mario Sanchez
January 17, 2026
Excellent from beginning to the end. I try appreciate Luis and Gregg for all they put into this process I try appreciate Luis and Gregg for all they put into this process More
Other Employees Tagged: Luis Morales
January 15, 2026
Excellent service and very professional. I would highly recommend this dealership and service/parts department to others. I would highly recommend this dealership and service/parts department to others. More
Other Employees Tagged: Juan Fletes , Matt Flores
January 05, 2026
Everyone I worked with was very knowledgeable definitely Armando. I would definitely go back and work with everyone. I had worked with. I will definitely recommend Mark Christopher to my friends and family. Armando. I would definitely go back and work with everyone. I had worked with. I will definitely recommend Mark Christopher to my friends and family. More
Other Employees Tagged: Armando Nuno
January 03, 2026
New vehicle was not working correctly. Started with a dead battery and continued into a failed AC condenser coil. They're making it right and sent me home in a brand new loaner vehicle, bu Started with a dead battery and continued into a failed AC condenser coil. They're making it right and sent me home in a brand new loaner vehicle, but it took two weeks in their shop on the repairs and then they noticed they damaged the door and had to send it to a body shop for more repairs. I am still driving a car that isn't mine for an undisclosed amount of time until mine is finished and delivered to me. I'm not knocking the dealership, but this has been one thing after another and is still not resolved. I haven't even been allowed to drive the car yet and I'm less than two weeks from having to make my first payment on it. More
Other Employees Tagged: Jeff Rizzi, Javier Juarez , Richard Chiang

