Great experience. Diagnostics are free. Customer service is fantastic from beginning to end.read more

Called them with some general questions and about a possible rebuild. Very friendly and…read moreknowledgeable. I haven't had any work done through them yet but great communication.

Quick response with very helpful seemingly honest answers and a fair rate for the scope of work…read morerequired. Expediency matters when your car is down. Sedrick has been great and seems in Market Value for turnkey services as well.

Oil chg and transmission flush on a 2016 Mercedes Sprinter 3500 van. I couldn't be happier with the…read moreservice. Charlie went over all that he did as well as checking brakes and fluids. Very reasonable price for services. I would use them again in a heartbeat!

If you need transmission work and you don't deal with Robert at Texas Best Transmission is south…read moreArlington your probably paying too much for craptastic work. Robert is a seasoned veteran that knows his stuff. The guy is amazing. Called or text updates on my vehicle and was very through and answered all of my questions in layman's terms because I'm a moron and don't know squat about vehicles. Very professional super nice guy without question. My name is Nathan Myers and I approve this message.

Dealership wanted twice what Texas Best quoted me and said they couldn't even start the repair for…read moreanother month and a half. Texas Best got started right away and completely rebuilt my transmission in less than a week. My car ran like a new car. They even insisted I bring the vehicle back within ten days to ensure there were no leaks and ran another diagnostic check. GREAT SERVICE FROM A PROFESSIONAL SHOP.

Very knowledgeable came and got my vehicle very quickly polite great customer serviceread more

its July 31 2026 and I went to TD for a T5 transmission rebuild out of a 1990 Foxbody , mind you I…read morepulled the transmission out myself and took it to him I asked him how much for a rebuild he told me he'd have to check it and let me know later that day I thought he was gonna be a honest stand up guy but boy was I wrong he called me the next night and quoted me 1,750 for it and when I told him that's out of my price range he said 1,400 and I told him I'd have to think about it so the next day I go to his shop and tell him I don't think I want to do the rebuild with him , he catches an attitude immediately and wanted to give me my transmission ripped apart in a box and still charge me 75$ I told him why didn't he let me know this when I dropped it off , he never told me anything about a diagnostic fee I asked him how much to give me back my stuff the way I brought in and he said 120$ , if I could give this place a 0 star I would NEVER BRING YOUR VEHICLE HERE!!!Terrible customer service

If you are looking for repair work, and dream about a place where they are honest and care about…read morethe customer, look no further.. They really helped me in a pinch and they were reasonably priced.

Very nice. Gave me a detailed problem of what was going on with the transmission, checked out…read moreentire truck and found that the sway bar was missing on one side of the wheels. They fixed all items with in a few days.

They are professional, don't try to say there's more that needs done just because I'm a woman, and…read moreaffordable. I went to them just before moving from the state via road trip. My partner has never worked on a car at all, and they were kind enough to explain everything to him as he asked questions about how they diagnosed things, etc. It's been a couple years since they did the work, and everything is still going great.

Nothing but thumbs up for me. would do business with them again. Lloyd was a big help and worked…read morewithin my budget. They stand by their work!

I discovered Quantum Mechanix probably 10 years ago when we first moved to Mansfield. We had an…read moreissue with our Tahoe and someone I trusted gave us a great word-of-mouth recommendation. Tommy just came through for us again. My son Eric was driving the old Tahoe and started noticing a coolant leak. He diagnosed it as a water pump and we gave Eric the number for Quantum. Tommy took it in, diagnosed it as a shot water pump and gave me a quote with options for replacing with an original Chevy part or a less expensive aftermarket that he knew to be reliable. Frankly, the quote was hundreds less than I expected. I am a fairly decent mechanic and would gladly pay his quoted price. He got the work done the day he was able to diagnose the problem. On time, exactly as quoted and functioning perfectly. I have recommended Quantum to friends for a decade and they all agree that you get honest work done right at a fair price. Everything you need in a mechanic shop!

If you're looking for an honest mechanic who knows what he's doing, look no further. Took my 2006…read moreMonte Carlo SS to the local Arlington Chevrolet dealership figuring since my car is a Chevy, they'd know the most about it. Engine wasn't starting immediately after turning the key. They performed their analysis and recommended a new starter and battery cables, for which they wanted to charge me $1,400+. I previously had the MC there for the same problem and, after $400+ in analysis charges, it was a $20 gas cap. Wanting a second opinion, I scheduled an appointment with Quantum. Due to their high volume of work, I had to wait 2-1/2 weeks, but the wait was well worth it. Tommy, the owner, looked at the battery cables and starter and said there was no problem with them. However, apparently some General Motors vehicles have this starting problem. Not enough fuel is getting to the fuel injectors when the key is turned. He pressure-checked the fuel pump and found it to be the problem. Rather than spending $1,200+, he showed me how to ensure the injectors have enough fuel so the engine will start on the first turn of the key. I've had cars serviced over 50+ years and Tommy is the first mechanic that took his time to fully explain the issue and the solution. He knows what he's doing and most importantly, he's honest. You can't go wrong with Quantum Mechanix.