Auto repair service near Diamond Bar, CA

Humming Motors Auto Repair would like the opportunity to earn your business and your trust. If you are thinking about having your vehicle repaired, please call us for an estimate. Humming Motors Auto Repair is a full-service preventive maintenance and au

Arthur was amazing! He did a wonderful job!

Not happy with this place or the work, took my M3 there one time, and that was all it took. First off I had plenty of work done, header install, carbon intake installed, water pump, coolant hoses, O2 sensors, thermostat, crankshaft seal, and instructed him to repair the oil leaks. Ed says he repaired my oil leaks, yet my car continues to leak oil, he damaged a $400 wheel, which he said, if the shop he knew, could not fix it, he would buy me a new one. When his shop failed to do so, I asked about a new wheel, of course he then said, he had no money to get me a new one, so I paid out of my pocket for a new wheel. I had him install my carbon air box, and he removed my OEM clamps, threw them away and replaced them with some junk hose clamps, stating he did not have the tool to replace the clamps, not sure what that has to do with me. So I took my car to check on the oil leaks and was told and shown by the shop, how the oil pan was not only missing bolts, but some were sheared off from over torquing, I was also missing header and sway bar bolts from his header install, my power steering hose was not secure, causing it to rub on part of the motor, damaging it, there were a few other things he failed to do, now costing me over a $1000 to repair after paying him over $2000 for less than subpar work. Do yourself a favor, and stay away.

Courteous of customer's time, polite and professional. Excellence! in customer service. Adrian Yanez

They are not BBB accredited! They do not abide by their warranties/ contracts! They are sketchy! I was recommended to P&G from sals auto mechanic in fontana, I have a toyota celica Gt 01 that had sucked up water into the intake. I needed a new engine. Sal had told me that this was the place to go. Alex, the owner had quoted me a fair price to install a new 1zz motor (the same kind my car comes with originally) he also said he could switch the position of my intake so that it wouldn't suck up water again.(He didn't) The job was to take 7 days and cost me $2200 with a 1 year or 12,000 mile warranty on all parts and labor. However, upon initial payment of $1100 and 12 days later. I called Alex and he said I needed a new air control valve because the car wouldn't idle right, he also said he needed to install a new "knock sensor", something I've never heard of before. It would cost me an additional $250 and another day of work, I said okay. I just wanted my car fixed. Finally after about 12 days and after I paid the $1450 I got my car back, I understand that cars with new engines have a "break in" period of 3 or 4 months for it be in top condition; so I made sure to drive with caution and made sure not to accelerate over 3000 rpms in between gears. After 1 month, my check engine light came on and my temp was spiking. I took it back to Alex and he said I needed a new temp coolant sensor. I paid $125 for the part and he installed the part. The problem did not go away. Not even a day later the light came back on and he said it was suppose to be a different sensor. He told me he charge me for this new mystery sensor, but after he installed it the problem seemed to be gone. I drove my car for 2 months before I got an oil leak. I took it back and Alex told me it would cost $600 for a new head gasket and seals, he also said that he would not cover it under the warranty because it was because of overheating due to the temperature coolant sensor, the same one that he installed 2 months before! Be warned! This company is not BBB accredited! They are sketchy! And they do not abide by their warranties/ contracts!