don't usually write reviews unless a place truly earns it -- and RPM Auto Body and Mechanic Repair…read moreabsolutely deserves it. I worked with them for about six years when they were located in Anaheim, and when they relocated to Riverside, I continued to follow them. That alone should say everything. I drive 80 miles just to have my car serviced here -- that's how much I trust them. This is truly a one-stop shop. From A-to-Z they handle everything: bodywork, mechanical repairs, paint, detailing -- they do it all, and they do it right. The quality of their work speaks for itself. Beyond the work, the people are simply amazing. The owner is one of the kindest, most genuine people I've ever met. Honest, professional, and always treating customers with respect. If you care about your car and want a place you can trust completely, this is it. I wouldn't take my car anywhere else.

Very good service. They explain everything on what needs to be fixed and why…read more The cost for my repair is good. I do not feel it is over priced. Thank you so much for fixing my 20 year old car. It drives like new.

My husband took my car here, I needed a new battery and an oil change. My dealership was over…read morecharging me and told me I had to leave the vehicle over night due to them being busy. George gave me such a great price. I took my Traverse and they had it done within 2 1/2 hours! Very happy with their customer service and how quickly my car was done. AND my battery comes with a warranty!

Very first time writing a review, I felt like I had to. Amazing service. Very kind people. Cozy and…read morecool waiting area. Great prices. They have the cutest dog that just chills in there. My mechanic Jorge was so genuine and gave me the best advice on how to keep up with the longevity of my car! The main service was for my transmission fluid. Will be going back

Great value, Good Service. These guys are lifesavers. Restored my faith in people and business…read moreintegrity. The first time I came here the AAA battery guy told me I needed an alternator. So a different AAA driver came to do the tow. When he saw where the battery guy recommended he said they recommended certain businesses that are essentially AAA approved but the last person he sent there he had to be towed a week later from the repair place and he ended up taking his car here to Diaz Auto Mechanic. It was the best decision I could've made. There was nothing wrong with the alternator it just needed a new battery. They could have lied and took me for a bunch of money I didn't have but they are honest and I appreciate that. If I don't have to bring my vehicles any where else I will not. I'm a single white woman and my entire life I've been hosed in repairs in everything from cars to household repairs. When I find some I can trust I will not go anywhere else and I recommend them everyone I know. This is that place for car repairs. It's a completely added bonus that their prices are more reasonable than anywhere else.

In November 2025 I took my 07 nissan 350z into this shop because I started have idle issues. The…read morecar would shutter as if it wanted to shut off. The car would still would idle within spec. They diagnosed it said let's start with a spark plug ,throttle body cleaning and throttle relearn. These services would cost over 700 dollars. I agree to the services. 2 weeks later I pick up my car to a undrivable surging idle. The car is reving up and down on its own. I pay for the services he provided, spark plug and throttle body cleaning. It cost me over 500 dollars. The mechanic said some one else was working on the car. I've owned the car for about three years and done nothing but oil changes and brakes. Took my car to so cal Z in Colton and the diagnosed it top to bottom and said your 1st problem was a simple vacuum leak. Then your 2nd problem was damaged throttle bodies and your 3rd problem is 2007 nissan 350z ecu is very fussy and will need to get sent off to be reprogrammed. Picked up the car 2 weeks later. The car is still has a high idle but much closer to spec gave it some time for the ecu to relearn. Performed a couple throttle relearns on my own and the car is back to normal. Now the biggest problem I have here is that im out of 3000 dollars for a simple vacuum leak

Brought my 2007 Toyota 4Runner in for a transmission repair, Jaime and his crew went above and…read morebeyond. Their knowledge and honesty saved me from replacing the entire transmission by correctly diagnosing and repairing the actual issue. They also tracked down an electrical problem that had been giving me trouble, replaced the radiator, and installed a new axle. The quality of their work, attention to detail, and communication throughout the process were outstanding. It's hard to find a shop you can genuinely trust, but these guys have earned my business. I'll be a returning customer. Highly recommend.

Friendly professional great service owner explain all aspects of service and recommendationsread more

They're amazing!!!! By far the best mechanics I've had in years! Not only are they kind, they were…read moreable to figure out the issue with my car in 10 mins and it took them only 2 hour to repair it.

I'm super impressed by the professionalism and the speed and quality of work that was provided…read more The service requested was to have front brakes and rotors replaced. They got the job done quickly with a great price. The value of their service is simply unmatched by any other. I highly recommend these guys over everyone. I'll definitely will continue to come and have my car serviced by them. Sorry Fritz Ford you guys suck and have lost my business forever!

I found Mike at the last minute when I needed to have my SUV towed to avoid getting a ticket. He…read moreimmediately said, "We got you," and helped get it towed in. They took care of the problem and saved me money by not trying to sell me a part I did not need. They also pointed out another issue that was about to go wrong, giving me the chance to get it fixed before it caused engine damage. I truly appreciate the honesty, quick service, and the way they looked out for me. I would definitely recommend Mike and his team. And the work and the price was spot on.

Great service, honest fair pricing, I definitely recommend Mike's. I had some steering linkage…read moreissues and was quoted as much as 2-3 times what Mike quoted. He even volunteered a discount when it turned out that the parts were not as expensive as he estimated

This used to be a close friend's business but he retired and sold it to his long time trusted…read moremechanic. Kenny has an honest opinion and will tell you what's to be repaired. Lol I don't know anything g about cars I just listened to my hubby's conversations . Today Kenny drove our car around the block and in circles ( I almost got dizzy). He diagnosed our car needs new left front struts just from listening to the clicking sounds. He took a picture of the cars info by the driver's door and he'll order the parts snd to come back next week to get it fixed.

Take your vehicle somewhere honest. I took my Yukon XL here after being recommended to them by…read moreanother mechanic for issues with transmission. The guy who took my car reassured me the issue would be fixed and it would take about a week to get my car back because he would have to check each wire to find where I'm having my problem at. I got a call not even a whole 48 hours later saying my Yukon was done and I could pick it up. He charged me $900 to change the alternator and said it's not his problem if the issue isn't fixed. Of course, my issue is not fixed and I'm out $900 & can't drive my Yukon without it going into limp mode. Do yourself a favor and go elsewhere, matter of fact avoid Moreno Valley mechanics all together, they're all swindlers..

My AC stopped working & after reading all the great reviews on this place, I stopped by & met Joe F…read more(owner). He was very busy, but took the time to check my car. He explained to me (step- by-step) what was needed to repair my AC. Joe is a very nice, & fair gentleman as well as his employees. All the reviews were spot on. I will continue to take my car there for future repairs. His prices are reasonable compared to 4 other comparisons. Great work guys!!

Thank you Joe and team. Appreciate all you do for the community and great to have reliable, trust…read moreworthy people that still exists.