Always legit we come down from Fontana, Ca for oil changes, brakes, and tune ups. The shop has also bagged 2 of my vehicles and maintained my set up. Many accessories to choose from for a vehicles. Its a true one stop shop. Thank you!

I got there for a non-appointment oil change on my 2010 Mitsubishi Lancer Gts and was greeted by the owner. He was very informative and agreed to get my car done in lass than 40mins. Best oil change experience ever. I definitely recommend this place for any service. Ask for a free diagnostic if you have a check engine light on. You can also make an appointment if you want it to be done at a specific date and time.

Fast, professional, honest, only the best with will and his associates!

Always professional and knowledgeable about the cars being worked on.

Theres some badass mfs that work here! Got my headlights installed and rear LEDs on my Kia Stinger GT-Line. Excellent job, neat and professional. Very knowledgeable about everything and they dont try to upsale you. I never felt forced to buy another product just some great advice for future upgrades when ready. Prices are very reasonable. From now on Im only taking my car to Concept 3!

Great service, amazing prices, Daniel and Chris are there to help!

Will is the best when it comes to fixing my car. if i had not moved to south Carolina i would be still trusting my car to that man. I was buying parts from K5 Optima store but no one could figure out how to put them on the right way until I found Concept 3. You want your car fixed right, see Will.

If You want a Professional Mechanic & Performance Specialist on Asian Vehicles. Specifically, HYUNDAI, KIA, TOYOTA, LEXUS, ETC (WILL) Hes not an Upcharge Guy but Very Honest & Does whats Best for His customers! Ive been coming to Him for the past 7 Years. JUST SAY SAM LIN REFERRED ME!

Been coming to this place since day 1 and all I gotta say theyre professional and they can work on any type of vehicles

Amazing job done by the Concept III team!! Installed an intercooler on my evo. Some parts wouldnt fit but they fabricated and were able to make it work! I can’t thank them enough. Will was able to troubleshoot a misfire problem I was having and fixed that as well. Highly recommend this shop.

Guys are solid here. Aftermarket depot.. installed my bop and installed fog lights w/ competitive rates. Highly recommend this guy. Knows what hes doing and very quick turn around A+

Knowledgeable staff and they give good prices on parts just dont count on them to work on your car if you have something important that needs to be done timely. I had an appointment scheduled a week in advance only to be canceled on the day before the appointment because something came up. Never had a mechanic do that to me before and it really messed up my schedule...

Will is the best! Hes kind, down to earth, and knows his s**t.

Best mechanics shop in the OC/LA area.

Great place, Will is always helpful and been coming here for years, he did a few mods on my BK1

Great prices and friendly staff. Highly recommended. Will has been working on my car for years.

Will and the team are very helpful and communicative. Prices are competitive but more importantly the the work is good. He is very efficient (can work while he talks) and he doubles checks all his work and that customers aunderstand everything. My go to shop. Also very clean. Conept 3has a good reputation in the community and he takes on many jobs big or small.

Friendly, quick service. Amazing work

Very nice repair shop very well-kept friendly enough staff a little busy for my liking but as I said the staff is friendly very well kept good place to go get your car repaired

Ive known about Concept III since it first opened back in ...I think it was 2010. I went to their grand opening KDM event. Back then I had a V6 Limited Sonata. Initially I think, they only worked on KDM vehicles; now its just him and I think he takes all comers. My flasher module that stops hyper flashing in my Genesis Coupe had gone out and needed to be replaced. He didnt have the part but told me where I could purchase it (who does that these days). My custom fogs hadnt been working for about 2 years and he said he could fix them for me. Long story short, I was in and out in about 30 minutes, happy and satisfied! Excellent work, friendly and professional, clean organized shop, and great price; what more could you ask for! Highly recommend, you wont be dissapointed!

Always great service!

I have had mods done at Concept 3 on more then one occasion. William, is extremely professional, friendly, and does excellent timely work at a very consumer friendly price. He does not try to high ball you, in fact he is always looking to save you money with the discounts he gets from vendors. I called at 10:00am today (Saturday) to get my car emblem removed, he was totally booked but still had me come in. I was there about 10 minutes and my car was all done, at only a $10. charge. It would have cost me more to do it myself in just buying the materials needed. I will continue to go to William for other Mods for my vehicle as they come up... I would strongly encourage you to visit his shop, and talk to him and come away with your own opinion, however I am sure if you give him that opportunity you will too be a happy and satisfied customer like me....

Will is a chill guy that knows his stuff. And will help you guide to what modification you want to do.

Excellent service. Owner / operator cares and takes the time to do it right.

I was having a problem with one of my cars. I was taking my car to the dealership and they charging me alot of money for a problem they couldnt figure out. The guys at concept 3 not only figured out the problems but fixed it overnight for like half of what I paid at the dealership. Thanks Will!!!

Great service. Easy to book appointments.

Ordered a flip key remote and they had some trouble getting their partner to cut but let me know situation and responded to requests for updates. Key and remote work great!

Family based Performance shop... we have nothing to hide here. Come for all your performance need from MINI Coopers to To Kia Optimas we have it all and work on all makes and models. Best prices in town due to our direct connections to our local vendors. Come with a smile and leave and a fly ride.

Cool shop. Owner is fast and attentive.

Great honest service

Great service here