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August 2025 by Paul Lauro
Some thirty years ago we were driving back to so cal. from East Cape and our truck wouldn't kick in to overdrive. We stopped in Loretto and drop the truck off at the first auto shop we saw and
the owner told us to go next-door to a tiny cantina and have a beer.
20 minutes later he handed us the keys and said here you go my
friends, when we asked what we owed him he just waved it off so we tried to pay but to no avail, so we gave him a bunch of fresh dorado fillets. Any way , his name was Ruben Diaz. Any chance that he might be part of these auto shop ? Never forget how kind he was.
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July 2025 by alphonso blunt
UPDATED 6/14/25 I confirmed last night that I was billed for ac delco spark plugs at $9 each, yet they installed auto lite plugs which go for 3.99 each (photos attached) Had the motor not been removed, I wouldn't have known!Now I can add fraud to the list!
Referred to this place by a few respected individuals in the Fairfield area and car scene, even attended the same car show a couple weeks before together (I won a award that day for the car). I needed some touch up work done in preparation for hot August this year. My regular mechanic was overbooked and couldn't take my car in, so I searched for someone with skills working on old schools. Again 3 associates suggested I go to rubens. I called, let them know who referred me, what I wanted done, and made an appointment. When I arrived after I had already checked them out online I was impressed and felt like I was in the right place. We walked through and I gave him my notes on what I wanted done. He took the list, told me his suggestion, et up to do diagnostic, I paid a deposit and I left. They called later that day said they were able to complete some of the list, but I'd have to come back in a few weeks to finish the rest. Ruben stated to me personally that I have a great car, showed me all he worked on and what he needed to finish, but gave the all clear to roll until then. I scheduled my return appointment. When I had it towed in for the 2nd appointment (carburetor install, and tune up). He called me in a frantic saying the tow driver let my car down without a winch and I may have transmission damage. I filed a claim with my insurance company. They completed the job, called me later that day and I picked up the car (April 15th 2025). I drove home car ran great, the next day while driving home from an outing, the car throttle got stuck, then it started losing power, got off the freeway and the car totally died. I let the shop know right away 2 phone calls on (April 16th) and was told they couldn't take it back in because the shop was full and they didnt have time for any projects. I let them know that I would have someone else look at it. While going through the claims process to have the transmission looked at, it was discovered that the transmission was fine, but 2 lines from the carburetor weren't connected and that led to the car running lean, which led to it overheating and throwing a rod, blowing a piston etc. Insurance doesn't cover this. So I reached out to them as soon as I got the report and tried to get a resolution, and was told this...
Hello Mr. Blunt,
This correspondence is in response to your claim for damages to your 1977 Pontiac Bonneville.
Any financial responsibility for the damages to your vehicle are formally denied. Based on the available information and pre-existing conditions. We wish you well with your vehicle repairs.
ARE YOU SERIOUS?!?!?
Did I mention I referred someone else to them in that time frame between my appointments and he wasn't satisfied with his carburetor service either. Im an excellent businessman and respected in the car scene, I do GOOD BUSINESS, Paid in full for both jobs, 2k total, and what I had them work on had an issue, and they're denying offering ANY HELP! I EVEN LEFT A 5 STAR GOOGLE REVIEW ON THE 15TH, THAT I'VE SINCE REMOVED ONCE I WAS TOLD THEY WOULDNT LOOK AT THE CAR. Im truly saddened by having to even post this. I did everything in my power to have my insurance cover it under the towing issue (because tow truck was hired by my insurance company), but there wasn't anything wrong with the transmission, so the claim was denied. They called the mechanic who did the diagnostic on the engine and he confirmed the carb issue and they still aren't accepting any liability. They didnt even use a new gasket in the carburetor... Terrible treatment. Shops make mistakes, honor them and treat your clients fair, this isnt fair at all.
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August 2024 by Tom Vohs
Reuben was able to locate the source and eliminate the loud rumble in my Ford Focus that a supposedly reputable mechanic in Vallejo could not. His work was efficient and very reasonable and the customer service was great. Thank you!
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July 2024 by Ingrid Elihimas
Noemi provided the worst customer service that I have ever received. Hope you can improve that otherwise you will keep losing customers like me!
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September 2023 by Lavonce Block
Thanks Dug for the awesome service.
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September 2023 by Maurice Curtis
Awesome job, friendly staff. Professional work
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May 2023 by Dania E.
I took my Infiniti Q50 to Ruben's because my car was making a weird noise when I start it. I had been told by the Infiniti's service team that the noise was normal but I knew that noise was not happening when I bought the car. Ruben said that the noise was not normal and it was due to the wrong oil being used for my transmission. He changed the oil which was completely black and the air filters. When I started the vehicle again, I did not hear the noise and the vehicle started driving smoothly. He made me aware of my brakes needing to be changed soon at the next oil change. 10/10!!!
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January 2023 by Cat Garner
All of my family takes their vehicles here. I've had problems with my car that other places could not figure out. Rueben always does. His prices are very reasonable. Now that I found him, I'll never take my car anywhere else.
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December 2022 by Enrique De La Torre
Tired of taking my cars to untrusted dealers shops and getting bad service, found this shop and since the first time I felt like a family member. Great service, I trust the diagnostics and repairs. :D A++++ 5star service.
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November 2022 by Jacob S.
I have never met someone who lied and was a rude to his customers than Ruben himself. Such terrible customer service. I went and brought my car that needed a new transmission the HE messed up. And he didn't do a single thing with it when I picked it up. Then cussed at me and my wife and told us to leave. Don't do business with a man that talks to you like this.
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August 2022 by Patrick Johnson
Ruben is the man, always takes care of me and has helped me out in a pinch before. Always goes above and beyond and is fair and upfront.
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August 2022 by Jill D.
When we first moved to Fairfield felt happy to find Belen and Ruben. Had some minor service done w/out an issue and Belen was nice. That all changed when we had the air conditioning serviced on our truck. Apparently there was a leak not detected and leaked out within days. OK. Lost that money. The mistake was going back. Was told a new Compressor was needed. OK. $1,300 bucks later our truck was returned a mess. Yes, I know they needed to get into the dash but on return a bunch of items were loose in the cab and stereo wires were not connected back. When I told Belen the truck was returned a mess (my Husband loves and respects his truck) she told me in a nasty tone, "I should EXPECT that with dash work!" WHAT?? NO WE SHOULD NOT EXPECT IT RETURNED TRASHED!! Ready for the Kicker...$1,300 later, it lasted a week and Leaked out Again!!!!! Took to AAA repair. Told we needed a new Compressor....WHAT? Did Ruben's even replace?? Used Part?? Anyway, for 700. for same job....Done and returned Truck just as it was dropped off. Loved and Respected! Air has been Blowing Cold for over a year now, never another air issue. Skip Ruben's!! Sorry Ruben, nice guy but Belen, Wow!
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July 2022 by Jacob A.
Ruben does great work and has definitely helped me and saved my butt. He's fair and reasonable and always does what's right. I can't recommend him enough.
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July 2022 by Ronald B.
I brought my car, Rubens they were able to take care of all my car issues and then improve my car performance. I had them install a fuel injection system. Im very happy with the quality of work and was done fast and efficiently. I highly recommend them for all your auto repair needs and performance car needs.
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July 2022 by Jeff A.
Brought my car in to have the air conditioning checked out as it was blowing hot air in April, 2022. I was charged for 4 pounds of refrigerant and told the problem was a suspected bad relay, and they didn't have time to finish fixing my car. I had called three times in the last month trying to get an appointment to no avail. I finally gave up and went somewhere else. That was this week, third week in July. The problem was an electrical plug, and that shop repaired it in 30 minutes. Additionally, my system is not leaking refrigerant. So my belief is if my system isn't leaking now, it wasn't leaking in April when I brought it in either, and I was charged for 4 pounds of refrigerant I didn't require.
