About Diamond Mart Mobil
Diamond Mart Mobil is a family-owned business that has been serving the community for 37 years. They are a 24-hour Mobil Gasoline service station and a AAA auto repair facility, as well as an NAPA approved AutoCare Center. The gas station offers Regular, Special, Super, and Diesel fuel options. The garage is open Monday through Friday from 8:00 AM to 5:00 PM, and on Saturdays from 8:00 AM to 2:00 PM. Customers can drop off or pick up their vehicles 24 hours a day, 7 days a week. Customers have praised the convenient location, fair prices, and excellent service at Diamond Mart Mobil. The staff is described as professional, nice, and trustworthy. The owner, in particular, has been commended for his honesty and willingness to go the extra mile to help customers, even when it means not charging for services that are not necessary. Overall, Diamond Mart Mobil is a reliable and customer-focused auto repair and maintenance service that has earned the trust and loyalty of the local community.
Very convenient place. Near target. You can walk in. I arrived at 8：00. Got the oil changed around 9：40 without an appointment. I would say waiting time it's not too bad. He would not charge You anything which is not necessary. The price is fair Compared to my previous shop. The owner is very nice and professional. He explained everything very clearly. The staffs are very nice. I would come back!
Because of the great service, I have to post my first review in google for this store and the crew. The front door next to the driver’s seat could not been locked. After I drove to this store, they fixed that for free. How amazing! It’s not easy in now days to find trustful people as they are, once you find, never go, stick with them.
Had the most amazing experience today that turned what could have been my worst day in many years into one of the best because I met James, the owner of Grand Mobil. My nearly new Tesla Model 3 ran over a pile of debris on the 57 Fwy which punctured my left front tire (Teslas don't have spares). I exited the 57S at Grand Ave in Diamond Bar. By the time I made it to Grand Mobil I had 9 lbs of air left! James immediately offered to help and within a few minutes had found two holes in the tread and plugged them. He would not take the (very fair) $20 fee I was quoted because he was not sure the plugs would hold. I forced him to take the money and drove 30 miles home without further incident. The tire is still holding the same 41 lbs of pressure I had when I left Grand Mobile. James... you really know your trade! You saved me from a nightmare. Thank you so much!