Our family's Ford Explorer required a water pump replacement…read more I visited several local auto shops to obtain quotes and was shocked, disappointed, and discouraged at the prices I was being quoted for the work my vehicle required ($5,000-$7,500) Shame on me for not reading Yelp reviews before wasting my time visiting other auto shops. I read the many positive reviews for Hye-Tech Auto Repair and decided to visit them. Upon entering, I was greeted by John (owner) with a friendly, "Welcome, how may I help you?" I explained that my Ford Explorer needed a new water pump and a few other items that other auto shops had advised me would require repair or replacement. While John looked up a few items on the computer to provide me with a quote, he introduced me to his son, Harry, who happened to be in the office. Thirty seconds later, John provided a quote that was $3,500-$4,000 less than the other shops. I could not believe it. John explained that he makes his living and succeeds in his business through repeat customers, and he does not believe in gouging customers for every last penny. He also shared that when he retires, his son Harry will take over the business, and he wants to leave Harry with a solid foundation of loyal repeat customers. It was then that I knew I could trust John and his son Harry. John went on to explain that replacing the water pump on a Ford Explorer was a 10-12 hour job, as it was an internal pump requiring numerous engine parts to be removed to reach it. This was the same thing all the other shops advised me. John suggested that I leave my vehicle, and he would perform a full inspection of the engine and contact me before doing anything to it. I agreed and left my vehicle. The following day, I was contacted by John, who advised me that the water pump did indeed need to be replaced, as it was the source of the constant leaks of the water coolant. I left my vehicle in John's shop for three days. During this time, John or his son, Harry, contacted me numerous times to keep me updated on the progress of my vehicle and also to point out that mechanics had discovered two or three very inexpensive items (under $50.00) which they recommended replacing, which I agreed to have done. All in all, I was and am extremely impressed and satisfied with everything about this shop. I spent much less money to have five different issues repaired on my vehicle at Hye-Tech than what I was quoted to replace my water pump alone by every single shop I visited prior to coming to Hye-Tech. John and Harry are very friendly, honest, and trustworthy. They are also very knowledgeable and experienced, and they offer GREAT customer service and communication. This is my new go-to shop for any issues involving our family vehicles. Thank you, Hye-Tech Auto Repair, for a very positive experience.

I opened a Yelp project to try to get my transmission serviced. The dealership wanted to charge me…read more$1300 for this service. Yelp projects are one of the best things I've ever experienced. It's nice to see you can get quotes at the touch of a button on your phone. This morning, I had time off, so I headed in to get my service done. I did not have an appointment and that did not seem to matter. I arrived first thing in the morning at 8 AM and ask if the service could be done. Harry was an exceptional young man, he took me in with no problems, no questions. He said they could do it this morning. I told him I would have to wait. He had no problem with that either. Prior to bring in the car in this morning, as I said, I used a yelp project and had several people reach out and give me quotes. After looking at all the yelp reviews I decided to give this place a try. I am super happy that I did. This place is a hidden gem, excellence, service, quality, and value for what you receive. There are not very many shops where you could feel comfortable and put your trust in them. As I spent time in the lobby, I was able to see customer service on the phone and customer service entering the facility. Every customer that walked in, seem satisfied and was treated with dignity and respect. I highly recommend this place if you have any automotive questions whatsoever.

Excellent and HONEST mechanics. This is my 2nd time here. My son took his 2003 Honda Accord here at…read moremy urging (4/29/2026). It was misfiring and running awful. David was involved and checked the car out. I was very nervous about what was going to be found since prior to his taking the car there, I checked his oil level and it was nearly empty! I feared he destroyed the engine. The car was checked out and much to my relief it was determined to be a bad ignition coil! Very reasonable price to repair! I was overjoyed! David also made some other very useful suggestions and recommended we replace the battery, which we did. So why am I taking the time to write this? Simple. I want everyone to know it is so refreshing to find a reputable auto mechanic that will not clean you out with unnecessary repairs, that's why! I highly recommend using them. I sure will and you should too!

I called different auto shops to get my tire patched up due to some puncture hole from a nail…read more David was accommodating and patient on the phone. I think I had to call him a few times since I kept changing my mind on what time to bring my car! Also, their pricing is the most honest and fair. We went to their second location which they recently acquired, David and his team were so nice and professional, and the job was quick and efficient. Thank you again!

Great experience so far! Had my transmission rebuilt and serviced here and my suburban has been…read morerunning like a champ. I am very happy with the service, the owner is honest. I would recommend this place to anybody especially my family and friends.

Took my car in for a transmission leak, the work got done quickly, but after about a week the leak…read morewas back. After calling back and trying to set up a time to get the car serviced again is where I started running into problems, it seems like they're always busy, which is great for them but as someone who works during the day, it's makes things difficult. They could care less about accommodating you in anyway, you have to just show up first thing in the morning and just hope they have space to take your car in. Really wanted to utilize their services since they were recommended by a local shop that I trust but feeling the need to bend over backwards just to get my car looked at is a headache that just isn't worth it

After 2 weeks of my jeep making noise and vibrating really bad everybody had a different opinion. I…read moretook it to Harrells transmission he drove it around the block and diagnosed it to be the transmission I dropped it off Monday and picked it on Wednesday runs perfect and no vibrations. Great job

We just had the Transmission rebuilt on our 2014 Chevrolet Traverse. The transmission came out…read moreperfect and it's like driving a new car. As a life long mechanic, I immediately noticed how clean and organized their shop is. Mike and his technicians are knowledgeable and friendly. They are highly recommended by many friends.

If you're looking for a good mechanic that will give you fair price this is the place to go for…read moreyour car services and oil change

Beware. Young's is definitely not what it used to be since its sale. Mark was honest.read more

2018 WRX "UPDATE"... After the leaking issues on the motor rebuild…read more I brought the car back. Martin went above and beyond to fix multiple leaks that came about from the rebuild. I trusted Martin to fix everything and make things right. Martin will do whatever it takes to make this right and have a satisfied customer. I had to have patience and it paid off! The car feels and drives like how it used too! Martin's character to makes things right is why people should come to his shop. He will help out to the best of his abilities to make the customers satisfied. Thank you Martin!!

5 Stars - TMC Auto Repair in Diamond Bar (aka the place that actually gives a damn)…read more Let me paint you a quick "before and after" picture so funny it hurts: Scene 1: Midas in Diamond Bar, 3:50 PM I roll up with a driver's window that's basically on permanent vacation (stuck halfway like it's trying to ghost me). The guy behind the counter doesn't even glance at the car. Doesn't ask a question. Just grunts, "Yeah, it's the motor." Me: "Cool, wanna pop the door panel and confirm? I'll pay for the diag, takes 10-15 minutes tops." Him: refuses to move, refuses to look, basically treats me like I'm trying to sell him oceanfront property in Arizona. I left wondering if "customer service" is now Latin for "get lost." Scene 2: TMC Auto Repair (literally two minutes away, same day) I used to go to this shop years ago when it had a different name. Now it's TMC and let me tell you -- it should be called TLC because that's exactly what they give you. Walked in frustrated and Martin greeted me like a human being who mattered. He listened to my Midas horror story, laughed with me (not at me), and said, "Let's actually look at it." One of his techs pulled the door panel in like 8 minutes and... drumroll... the motor was bad and there was a broken plastic piece in the regulator (exactly what I told Midas Guy, who apparently moonlights as a psychic but forgot to charge his crystal ball). They got the window temporarily working until the new part arrives, didn't overcharge me, and treated me like I've been their customer for a decade (because I basically have). Moral of the story: Midas Diamond Bar just lost a customer for life in under five minutes. TMC gained a customer for life in under five minutes. Martin and his crew are professional, honest, fast, and actually enjoy fixing cars instead of playing "guess the problem from the lobby." If you're anywhere near Diamond Bar/Walnut area and need work done by people who treat you like family (the good kind, not the dysfunctional Thanksgiving kind), go see these guys. 10/10, will be back the second that part shows up -- and for every oil change, brake job, and random rattle from now until my car retires. TMC, you have my undying loyalty... and my window now goes up AND down. Magic. Show less

I'd definitely recommend Auto Mex Transmission to anyone, family and friends for sure. Valentine…read moreand his dad Manuel took care of me from start to finish. I had transmission work done on my truck, and communication was solid the whole time. They got it done as promised. The price was really good for the amount of work they did, and they were flexible with pickup, which I appreciated. They made sure I got my truck back on the road. My 2011 Chevrolet Avalanche is running like a champ. Five stars Appreciate all the hard work

I personally thanked Manuel and Valentine for repairing the transmission on my old car. They did…read morean excellent job and also replaced the flywheel and the starter. The shop is spacious in the back and located in a street with not too heavy traffic.

Best guys ever. Andy save my business. Fast. Low price. Quality. Just left my truck on Monday. on…read moreWednesday morning the truck was completely ready for work. Best service and price

I have known these guys for a few years and they do honest, quality work at competitive prices…read more Never had an issue with anything they've built and I have recently moved all my business for transmission work in my fleet to them. Andy and Juan are very friendly and experienced and always get it fixed. Thank you for everything !

Good, fast service. Quick oil change and tire rotation. In and out in 30 minutes. Recommendread more

This place has good services and the workers are very helpful and polite helped me and my family…read moreout with a good price thank you will be coming back again