GR Performance

this guys is a pile of crap as he charged me 2700 bucks to have my motor done it sat there for almost 3yrs got everything back finally after my car got impounded and nothing has been done costed me another 1300 bucks in tow fees exc this guy is a joke//

I just placed a call to their shop and I was told that they are not taking any jobs at the moment.

I went to GR Performance to install some new headlights and an HID kit. They did it for a great price, and they did a great job. I would definitely come here again. Very nice guys.

Dang, this guy hooked me up!
I was looking at a car nearby and needed a mechanic to inspect before purchase. He said he was pretty backed up but agreed to take me anyway, said he would do quick inspection for cheap. Little did I know; his idea of a «cheap inspection» was incredibly thorough and helpful!!!
Mario spent prob close to 45min with me walking around the car and looking at seemingly everything, even explained how things work, why, when they Really needed to be replaced, etc. Afterwards he even wrote me up a list of everything that should be changed in the car, at some point soon, and an estimate of how much they might cost.
I don’t live anywhere near this place, and I believe they primarily work on performance engines, but I would totally take my car here. Very thorough, Thanks Mario!

Finally got around for writing a review for this place. Mario always takes care of his customers which explains why he’s so busy these days. He helped me on my motor swap and did a very good and clean job. I am definitely a repeat customer although not as often as I would like to since he’s a bit far from me :(. Strongly recommend this to anyone, especially those who wants performance work on there engine.

Before Mario had his shop he still did work for friends and family, now that he runs his own shop, he helps others who want the best efforts put towards there car…
he personally did a top notch clutch swap on my vehicle and even went as far as to lend me his personal vehicle due to me starting a new job and needing to be mobile…
the work he did was top notch and service speed was grade A as well…
i couldnt be happier with his work, and if anything else happens, i know who to go to without any hesitation…

My car had a squeaky noise and my friend recommended GR Performance. The owner Mario looked at my car and knows the problem right away. He was fast and honest. My brake pads were replaced and the service was fast! No more squeaky noise, woohooo. Thank you Mario.

have u ever meet a mechanic who takes his time to explain and tell you exactly what’s wrong and show u what need to be repaired on ur car? well this is definitely the place to go. Mr. Madrid gave me a very fair price and i continue to go back to GR Performance for all my Acura maintenance and repair needs. i would definitely recommend this place to anyone who want the car repaired or upgraded in any way.

I was referred to GR Performance by a friend.
I didn’t like taking my car in to the dealer because I know they are more expensive than a mom and pop shop and I would feel like I was being gipped.
I usually take my car in to see Mario (the specialist) for an oil change even tho I moved to SFV (yes all the way from SFV to Irwindale… so he must be good!.. no lie). The last time I went it turns out that my AC was also not working properly (beginning of the summer heat). Mario was nice enough to examine the car to find out that there was a leak. He showed me where the leak was –condensor. He explained and showed me what the problem was at a basic level (easy to understand for a clueless person). He gave me price quotes before doing anything and provided you with what your options are –whether you fix it with his shop or at another shop. Mario gave me a great price to fix my AC so I decided to have Mario fix it and I was able to watch the whole process — because I am curious. Now my AC is all fixed. Woohoo!
I agree with what April B. said.
Overall a great experience and Mario is a trustworthy guy. You will not feel gipped.
HIGHLY RECOMMEND!

I came here to get my performance fog lights replaced. The owner, Mario offered different fog light options and explained the pros and cons of each type. After going with his recommendation I couldn’t be happier. Once he was done with the installation he walked me through step by step of the process he did. He explained everything on a basic level that I could understand. He was nice, knowledgeable and trustworthy and all at an extremely reasonable price. I highly recommend.

Thanks for the great service and taking the time explaining to me everything my car needed in terms that I can understand! Appreciate the patience and time! Will definitely GR Performance to family and friends!

Very professional!!! I went to GR performance to have my brakes done, Mario was great,. He explained everyinthing to me and gave me a great price. I would recommend this shop to anyone, GREAT SERVICE, GREAT PRICES!

I took my car to GR Performance, because I had been having trouble with my power steering. According to my former mechanic, fixing it would be very expensive. So, I had Mario of GR Performance make an assessment of my car trouble and what he found surprised me. He was really good about explaining everything to me. A car part had been stripped and needed to be replaced. I also mentioned it was time for an oil change. Not only did he take care of my car in a timely manner, he gave me a great deal. I would definitely take my car to GR Performance again and will be happy to tell my family and friends. Thanks again for all you’ve done!

I know it’s hard to find a good, honest, reasonable priced mechanic these days to work on your car. Especially when you’re in LA, where in order to get anywhere you need to have a car. I’ve been to GR Performance, and can honestly say the owner, Mario, is very nice, friendly, knowledgeable and very experienced about cars. He will take the time to diagnose your car before doing anything, so that he can tell you exactly what is wrong or will need to be done to your car. He is definitely reliable, and will get the work done right and won’t rip you off like some car dealers do. It’s great to know where I can go to if I ever have any car issues. Since there are so many cars in LA, that equals many car shops to choose from, I recommend anyone to take their car in to GR Performance!