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!

Two weeks ago my husband was traveling through the area on business. After car issues for a two…read moremiles radius and down to only two gears, he knew it was the transmission going out. Locals referred him to this location as it was close to where he was working. He was able to get a hotel room on a Friday night which the employees at this location took him to and picked him up the following morning on Saturday to give him the diagnosis. Not good news. Tranny was shot after almost 300 thousand miles. Said, they'd never seen a vehicles engine look so good after going so long! Not bad for a GMC that's a 2005! Anyway, my husband had to rent a car to get back home as they said our car wouldn't be ready until Wednesday 10/3. They had to rebuild the transmission and order all the parts. Things went smoothly and the technician and owner were on top of getting my car done. Communication was great. Ben was keeping my husband update on the progress. We left our area early on the 3rd and arrived in town to pick up our vehicle. Dropped off the rental and they took us over to AMMCO. Our wait was a little more a than 45 minutes as they were finishing up a few last details and wanted to take it on a test drive. I started looking up the review after I "checked in". I was so worried that we might have been the next casualty?! I thought that things had gone so smooth for us, but was concerned with what I saw customers write about their experiences. I'm happy to say we didn't have a negative outcome. They were accommodating to our payment plan, all the work is under warranty- which is good at ANY AMMCO location. We recently just drove over 688 miles with NO ISSUES! Car is running like a dream. Our situation and service with this location felt honest, we tended to believe our vehicle was a priority and the repairs process went well. We also found that the price they charged us was fair and that we weren't ripped off. We were thankful for the referral and happy with the results.

This place is a scam. I brought in my 2020 Camaro for a fluid exchange because I was experiencing a…read moreshudder. After their "diagnostic," they told me they were getting a code and when I looked up the code it was related to the engine, not the transmission, and claimed I couldn't just do a fluid exchange. Instead, they recommended a full rebuild, saying my transmission fluid was contaminated. When I asked to see the fluid, they told me they don't take pictures. I then asked what the fluid actually looked like, and the employee said he'd check with his technician. He already seemed irritated at this point. He went to the back, came back, and simply repeated that the fluid was contaminated. When I pressed again for details, he said he didn't know because the technician wasn't there, which made no sense since he had just said he went to ask him. At that point, I decided to get a second opinion. The employee became dismissive and said another shop would tell me the same thing. I told him that's exactly why I wanted a second opinion. I ended up taking my car to Pro Trans Automotive in Riverside, where they informed me there's a known issue (Bulletin posted by chevy) with my vehicle and that a simple fluid exchange with updated fluid is a common fix. I had it done, and the shudder is completely gone. No rebuild needed. The difference in honesty and customer service was night and day. This shop tried to upsell me on a major repair I didn't need, while the other shop fixed the issue correctly and affordably. I would not trust this location. Take your car somewhere else. (Highly recommend Pro Trans Automotive if you are in the Inland Empire)

awesome cant be beat for quality and professionalism i use…read morethem for any and all transmisison issues

Service was great on my 2021 Silverado 1500. Dropped off truck and was called back within 2-3 hoursread more

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.

Horrible company do not go here!!! They ripped off my elderly dad and took $6000 from him without…read morefixing his car!! I will pursue legal action against them!! BEWARE!!

Took my Benz here and within 2 weeks my car had same problem took my car to a better mechanic and…read morecome to find out they didn't even change the spark plugs like they said they were suppose to ended up putting back the same spark plugs causing more damage this place is a rip off and a scam!!!

Can't say enough good things about the team here. They charged me LESS than I had agreed to for a…read morefull diagnosis, and then offered some advice as to why I should NOT give them the work! Can't find that level of honesty in many mechanics these days. But it pays, particularly saying that to others who responded to my Yelp project for the work I needed; I will never go back to anyone but them for all my transmission needs in the future.

Where to begin with the amount of kudos and appreciation for HD Auto Transmission. From the time…read morewhen I called in for a quote for transmission rebuild and spoke with Emily, she was very thorough, polite, very helpful, and provided exceptional customer service! Ethan, the Man, the Myth, the Legend! If you want quality, honest and trustworthy work done for you, come see Ethan! He is extremely passionate and knowledgeable about his craft, he will explain in layman's terms how things work and you can see the level of pride he takes in his work! I am elated to have found such a great Team that I can rely on to keep my toys and family vehicles safely on the road! Much appreciation to you all!

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

Yes! Absolutely use them for transmission help. Very happy…read morewith service and care received. Sal is great! Called and responded back quickly. Was patient and willing to discuss situation via phone call. I was able to describe my issues with transmission and he went over scenarios and possible solutions. Called a few places and price was comparable. But service is definitely top notch. They even offer free tow service, which no other company offered. Sal came personally and picked up car and was even went above and beyond to help drop me off somewhere on the way to his shop. Service was quick. He quoted a week to week and half and was done in a week. Best part at the end was,he even picked me up from home to get car from shop. He definitely earned my business and recommendations. Everyone should definitely use Rancho Transmission

Honest and trustworthy is all I have to say. Sal is someone you can count on. Took my vehicle there…read moreand turned out to not be a transmission problem and we were recommended to another shop.

I had issues where smoke came out of my ac units in my car and smoke came out of my hood. I took it…read morehere and he charged me around $730 for different parts + labor. Got my car back about 3 weeks late just for it to begin smoking again the next day. Turns out ANOTHER mechanic from facebook market realized it was a headgasket and I replaced the engine. Problem was fixed and never had an issue again. DK sucks and i would never recommend him to another person. Charges too much to not even know what he's doing. Save yourself a headache and find a real mechanic. This guy claimed he'd have my car looked at and fixed in a week. Takes about 3-4 weeks since he's backed up and cares about attending truck shows instead!

I Took my 1974 Trans Am in to get the oil changed and a vehicle inspection they found my brake…read morelines were bad and needed replaced. Doug the owner was very knowledgeable about the older cars and gave me a great price on fixing my T/A.