Karlette M.
9/26/2025
I am always skeptical coming into auto shops because my father usually changes my oil and does minor work for my car, but this time he wasn't able to and I had to put my trust into a shop! I'm so...
Diamond Auto Center
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(7)
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105 W California St
Ontario, CA 91762
Diamond Auto Center in Ontario, CA, is a trusted name in automotive care, offering a comprehensive range of services including oil changes, brake repairs, and engine diagnostics. With over 35 years of experience, their expert technicians are committed to delivering high-quality service and maintaining vehicles in top condition.
Dedicated to customer satisfaction, Diamond Auto Center prides itself on transparent pricing and personalized service, ensuring that every repair is executed with precision and care. Their commitment to using the latest technology and industry-leading practices positions them as a reliable choice for all automotive needs.
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Reviews
4.57 reviewsAlondra L.
11/21/2025
Came across Diamond auto center and was respectfully greeted by Arturo, asked what I can do, told him I needed 2 tires and just like that Mikey took care of it. These guys are great, knowledgeable...
Judy V.
4/19/2025
5/5 Rick is THE GOAT. Honestly a life saver. My car overheated due to the shaft seal leaking coolant. I had my water pump replaced just 2 weeks ago (at another place) and they wanted me to take it...
Angel F.
10/30/2025
They installed my race tires 10/10 price was real nice also definitely recommend they treated me like family
McKenzie Williams
7/25/2025
This is totally unrelated but I dropped my wallet outside my house. Rick had found my wallet and was nice enough to leave a note on my door of my house. He left me his contact info and even went...
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