These guys do amazing work! Professional as could be, smart, and do the job the right way for the right price. Trust is hard when it comes to mechanics. These guys make it easy! From Oil changes to engine swaps, you can trust these guys will do it right. read more

Best People With the Best Skills, and Fast, The Only Professionals I've encountered in Scal. for a fraction of the price of any other place, I Highly recommend them, I trust them with my life behind the wheel. I Drive over 100 miles/day. read more

Will and the guys at the shop know what they are doing. I had a noise coming from on of my pulleys that I couldn't figure out, took it in for an inspection Will found the issue, Min helped me order the parts, few days later my cars running like its brand new. I've been taking my car here for the last couple of years and I will keep bringing my car here. The quality of work is top notch as well as the amount of knowledge for the techs. They are always busy but there's a reason for that, the guys know what they are doing. Straight forward pricing and excellent customer service! read more

Will does amazing work! Concept 3 is apart of a handful of shops that I trust with any of my cars. He and his mechanics are thorough and ensures that you leave happy! His shop stays busy for a reason, he will give your car 100% the attention it needs during the time you are there. Just know if you take your car to Will that it will be in good hands. I never have to worry about whats being done to my car or stress about it being in the wrong hands. Concept 3 has a customer for life. Love the work you guys are doing! Its so hard to find a shop that I can fully trust and this is one of them! read more

Concept 3 Performance - Car Stereo Installation Near Me - Santa Fe Springs, California

Concept 3 was great to me and helped me fix my car which had multiple problems, Manny in the front was also very nice! Thank you!!!

Came here to get a front lip installed on my car. This is hands down the most professional, cleanest, and friendly automotive shop I've ever been to. Everything was organized too. All started with my interaction with Will on an initial call. Will was very courteous, and answered all my questions. Upon arrival, I was amazed at how clean and tidy his shop is. A very slight area of my front bumper needed to be shaved off due to prior damage before the lip could be installed. Once the lip is on, you wouldnt even see that area. Will told me this had to be done, as opposed to just shaving it. I believe most shops would have just shaved it and not told me about it. I would definitely recommend Concept 3 for your automotive needs. read more

Dont go here, my body kit fell apart while driving! Left fender they drill 3 holes crooked, right fender they drill 5 hole crooked, wtf, left and right should have same amount of holes, amateur techs here , beware! Stay clear! read more

Took my car to Concept3 thinking they would be good and honest on servicing my vehicle. Took in in December of last year got a lot of service done to it. Shocks, brakes, rotors, oil and trans tune up, and valve gasket done. When I got my car light engine turn on told them about first they said it was like that when they got it, I told the assistant bullshit if it was I would've mentioned it to them. So he reset the light so next day it turns on again I called and told them about it they said get a diagnostic see what came out which I did at AutoZone got the report saying it was valve gasket. So I called concept 3 told them what diagnostic said they said they'll get back to me in couple days to set up a appointment to take it back. Well two days went by and nothing I called them the secretary said she'll call me back at end of day which she never did. I called back third day secretary said she'll get back again so I sent a money IG and that email on there site and didn't hear from them at all. Took it to another mechanic he showed me the diaphragm from valve cover broken that Concept3 did that's probably why they didn't answer me back knowing they screwed it up. I thought they be good honest people but there not. People be aware they will not get back to you when they screw and break stuff on your vehicle I would not recommend this place and never again taking any of my cars there This place just will take your money and not fix the screw ups they do and will not tell you what they did wrong. You people been warn, don't take your vehicles to this place at all read more

Will does amazing work. he's incredibly busy and is in high demand. consider yourself lucky if you can get your car in with him. read more

Concept 3 Performance - Car Stereo Installation Near Me - Santa Fe Springs, California

- one of the best shops I've ever been! Super professional and always treats me and my family with so much love! Brought my type r to Will and the gang and since then I've never taken my car to anyone else! 100% recommend this shop, from tires, repairs and audio! These guys do everything! Thanks again Will read more

Took my hyundai genesis coupe for an alignment at a tire place and when I got it back it was having several problems. Dealer couldn't figure it out. Took it here and i was helped in 5 minutes. I think the guy was the owner he was very helpful and I am so relieved to finally have my car working and in good condition. It is VERY DIFFICULT to find good car shops and people and this place is it. I am so very appreciative I was referred here! Thank you so much concept 3! read more

I tip my hat off to you and your team for all the hardwork you do and everything you do for all these customers. You guys are saints!! Thanks for the great work on my car. Keep up the good work and cheers to many more! F**k the haters! read more

First time here for any service and they are awesome! I was just here for an oil change on my 2010 Mitsubishi Lancer on Friday the 13th. Took them approx. 30mins. I Will be back for other services! read more

Concept 3 Performance - Entrance display. - Car Stereo Installation Near Me - Santa Fe Springs, California

These guys are honest, upstanding people and they explain things in ways even the dumbest of people can understand, and I really appreciate that. They don't try to nickel and dime their customers and when someone else says that the car needs something that it doesn't, they're honest enough to say "yeah you really don't need that please don't waste your money on that" and it seems that their prices are much more affordable than other places and they care about the quality of work they do. You can tell they're passionate about the work they do and providing a great service to their customer base. Please don't listen to any of the negative reviews from people or at least take those with a grain of salt, these guys are very transparent about everything they do and will tell you honestly if they cannot do something or if they don't know something. The owner doesn't let his pride get in the way of doing a good job and delivering the best service he can to his customers. I wish Will had a shop in Houston because I would have all my auto work done at his shop, as a woman it is hard to find trustworthy automotive care shops and I would feel very comfortable trusting any diagnosis Will or his guys told me about my car, I don't feel like they'd ever try to take advantage of my lack of car knowledge just because of me being a woman. I can't say the same about 99.9% of the other car shops out there. If you live anywhere near Will's shop, definitely check it out, I'm sure they will take very good care of you and your car or truck. read more

The owner is an excellent mechanic who gives 100% to every car in his shop. If you come here your car will be back on the road, and running like it did when it drove off the lot, I promise. Concept 3 performance will make your car perform better than you could ever imagine, after visiting them you will feel more connected with your machine!!! read more

Im from Texas and I want to give this business a 5 stars because I really love their videos on youtube, the way they work so professional as a mechanic and good communication and friendship with the coworkers I would really love to go there to meet this guys. read more

fyi, they're an essential busienss, so they are open normal operating hours. the guys at Concept 3 do quality work here! Will's the owner and super knowledgable particularly about korean cars, but they service all kinds of cars here - german, japanese, domestic, etc! front lobby waiting area has sofa and magazines to wait, or you can check out their customized cars in the garage, there are chairs to watch while you wait too. call or text for quotes, don't dm their instagram they don't check that, or you can book an appointment from their IG directly. you can get almost anything car related done here, performance upgrades, media/head unit, coils/springs, airbags, wheels & tires, etc. (i say almost because it's not an autobody shop, so they can't do paint/bodywork. it's an auto repair shop). deposit for parts first to get things ordered, pay for balance once service is completed. they also do basic services like oil changes and maintenance services. :) since my car is well past warranty, i'd only go to concept 3 going forward. read more

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Best mechanic in the world!!!!!!! Saved me so much money!!!! Thank you!!!!! I recommend this shop to everyone

Brought my car here with lower control arm damage(bent). After they fixed it, all my warning signal on dashboard come out the next day.. So I called them to let them know what happened. I was talking to Andrew and he just told me that "boss said he can't do nothing about it because the car is breaking.." I'm like how the f*ck the car is breaking if it's NEW?? IN ADDITION, I also provide the NEW Lower Control Arm that I ordered from HONDA because that's the one they recommend. Also, when I brought my car here, there was no any warning lights on my dashboard even though my lower control arm was damage(bent) and Andrew knows that because he drove my car to the back and now they saying that the car is breaking down. I DON'T RECOMMEND THIS SHOP! BE CAREFUL GUYS! BAD BUSINESS! read more

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I came here to get brake rotors, pads, and transmission fluid replaced on my 2012 Acura TL. Will gave me a time to bring my car. When I showed up, he took care of me quickly and for an awesome price. Definitely recommend this place. Side note: First thing I saw when I walked in this shop was a wide body Kia Optima. Then I saw a bunch of other customized vehicles. Looks like they do a lot of custom performance upgrades. Cool to look at and dream of doing on your own car. read more

It's unfortunate that 2 brothers (Anthony and dean) bash a business because they didn't have their way. They have no idea the blood, sweat, and tears it goes into running a business. Just go cry somewhere else. I do hope that kia never gets fixed cuz y'all don't deserve it. read more

The wife and I have been bringing our cars to Concept3 for about 7 year's now. We bring them in stock and rolling out fully customized. We don't take our car's to the dealer for service, because William also takes care of all our routine maintenance. We are very happy with his service and attention to detail in all he does. As a side note we drive down from Fontana, Ca which is about 45 minutes away but with SoCal traffic it's always about a hour and a half drive. Thank you William for all your work. read more

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The owner knows what he's doing. I believe his name is will. This dude is a genius and has a bad ass cars he built.

Not usually one for reviews especially long ones but if I can save at least 1 person from dealing with this guy than I've succeeded. My 82 year old dad brought his Tuned Kia Stinger to Will who had performed several performance mods in the past. This time he needed to have an O2 sensor replaced and a Factory Turbo. Car came in beginning of September 2023. Sat for a month while waiting for parts. Parts arrived Oct. 7. Come Nov 9th my father had passed away with no communication up to that point from Will about the car. Me and my brother show up to the shop to talk to Will and figure out the next steps. We sat for 3 hours completly being Ignored. Nobody there to answer phones nothing. Then Will comes out to talk to us and promises the Car to be done the following week. They complete the install but then the car is having issues. So instead of troubleshooting the issue and resolving it so we can be done with this, they put the car back in the corner with no communication of what the next steps are or when we can expect it to be finished. This guy is to busy making social media content instead of taking care of paying customers. No customer service, Super Rude, and to this day we still have a car that we had to tow out of this BS shop that is not fixed properly. This Dudes a joke. I would'nt let this HACK wash my Dog. Hope you read this Will and It makes you strive to be better read more

Joel is straight trippin. I've been seeing multiple reviews about him ranting on with statements that don't even make sense. Will uses air tools and uses a torque wrench double clicking to make sure it is safe for the road. But I guess some people always have to blame other people. Will has been nothing but respectful from the minute I walk into the shop to the very second I leave, every.. single... visit without fail. read more

We took my son's car in and the owner was amazing. The service was spot on. Now seeing his TikTok's-I won't take his car anywhere else.

My car was serviced here yesterday for my BCracing coil overs to be installed and "Will" the owner did a great job staff is knowledgeable as well. Will be back for my steerIng wheel installation soon ! read more

Concept 3 Performance - Car Stereo Installation Near Me - Santa Fe Springs, California

Will is very knowledgeable and explains the cost and options upfront and clearly. I noticed Concept 3 has a family atmosphere and makes you feel comfortable without any pressure to upsell you. Everyone working at Concept 3 is honest and I feel comfortable and trust my vehicle being worked on at this shop. I will be going back to them for any future maintenance, aftermarket parts, and tuning for my Kia Stinger GT and Mercedes C300. read more

Great service and very knowledgeable staff! So I like fast cars! I love the adrenaline rush when try to break the speed of sound, ok maybe not. So recently got a little 2 door "speed racer", and the 1st week I got the car, I got a speeding ticket in it. Obviously I figured out that I NEED to get a radar detector installed, so I called these guys. The guy that picked up my call was super nice, and super knowledgeable and spent quite some time on the phone with me explaining to me what kind of radar detector I needed an how much they cost and what accessories I also need to purchase. He also told me they are able and willing to hardwire it into the car for me and place it so the cops wont see them. They are legal to have by the way! I ended up giving the car to another family member due to the seats being uncomfortable but will be purchasing another "speed racer" soon, and when I get it, I will definitely take it to these guys to get my "cop detector" installed! read more

Will does outstanding work here and is very honest. I recommend this place. I will definitely be coming back.

Every once in awhile I get the 'bug' to improve the looks of my Optima. I would describe William's work as meticulous, great attention to detail but most of all he has developed a relationship with me. He knows what I'm looking for and his suggestions follow my needs. And finally his pricing is more than fair. The fact that I'm in the Menifee area and willing to make the drive is a testament to his work. read more

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Great buisness, from customer service to work being performed on your car, this is a definite go to for all your mechanic needs. 10/10 recommended shop. Great prices on any part you need. read more

Honest polite guys that provide free estimates and fair prices. The only reason that Concept 3 gets 4 stars instead of 5 stars is that they don't check their answering machine very often. I would highly recommend calling back later instead of leaving a voice mail. You should definitely make an appointment as they are pretty busy and have customers dropping in all the time. read more

Honestly would not take my car to anyone else whether it is to tune, modify or regular maintenance. Will and Concept 3 is an honest and trustworthy mechanic, business man and person. He is a specialist with all vehicles. Please if you are looking to service your car and don't want to waste your time and money searching for someone honest and good please take it to Concept 3. Thank you for taking care of me Will I am definitely coming back! read more

Concept3 has worked on my car for several years now. Great Service and Trustworthy shop! They can get you parts, or you can bring yours for installation! They Service all types of cars, domestic, KDM, JDM, and Euros. Check out their IG page for some of the awesome cars they work on! read more

My car (genesis coupe) needed work done so I decided to give them a call and schedule an appointment which was quick and easy. Arrived at the shop for an inspection and was given a fair quote. They ordered OEM parts, scheduled another appointment on the day my parts arrived and got the job done in a matter of minutes! Loved how organized they were and how fast they are getting the job done. They also showed me faulty areas in my car where previous work was done by other shops. I can definitely rely on them to get the job done in a timely manner and do an honest job. Will be back again! read more

Today was my first day going into concept. Had to get some lights changed out but man these guys are awesome. The guy in the front helped me out so much answered all my questions I had about some things I wanted to add to my car. I'm pretty new to car stuff as far as hooking it up and he was helpful and explained everything to me. All the guys in their were super cool. Didn't make me feel dumb about questions I was asking. Honestly felt welcomed right as I walked through that door. I definitely will be back I actually ordered some stuff so I think I found my new place for all my car needs! Thanks concept fam! read more

The team did an amazing job on installing my flow designs splitter for my elantra n! Highly recommend them for any custom work!

This shop is a nightmare. They sold me some stocks and they used aftermarket lugs on OEM wheel and my wheel fell off while driving. Not only did he not refuse to help me fix the damages he caused but he almost got me killed and possibly the kids in the school bus next to me amd the tire flying down the street onto on coming traffic. Was evaluated and evidence was shown of what they did. If you value your life, I would not go there. So called BAR, BBB, and a few other agencies to just have them inspected so that they dont put anyone else's life in danger. read more

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Been going to Concept 3 for years now with me and my wife's cars, but never got around to writing a review until now. Will is an honest and knowledgeable guy. When ever I'm there for any work, I can trust that they will not attempt to sell me anything I don't need and that any work is done with quality parts and service. I've gone to Concept 3 for oil changes, lighting installs, spring installs, coil over installs, air suspension maintenance, taking my car back to stock, bought a front lip with install, and the list goes on... They do not take any shortcuts regardless of if you drive an old car worth $1,000 or if you have a show build in the hundreds of thousands. I recommend Concept 3 to all of my friends and family! read more