After searching for a good place to take my car other than a BMW Dealership i found these guys off google. They were friendly reasonable pricing and know what they are doing. I took my car to Bill Jacobs cause i had a miss fire and the tec over there was like you put the wrong plugs in your 01 BMW 740i how do you put wrong spark plugs in the car when the car came with NGK fom the MFG. I brought it over to Performancewerks and they called me back after half hr and told me one of my coil pack in cylinder # 7 was bad and replaced it. Paid Bill jacobs $150 to look at car and couldnt even tell me what was wrong with my car. You can trust these guys with your car.

Jasim Ahmed AL-Ansar

Pulled my car out of Bill Jacobs after calling these guys. Price was considerably lower and repairs were performed immediately. Waiting/Office area and restrrom were very clean and made you feel at home. Definitely would recommend Performancewerks to anyone who owns a Bimmer.

What a delight to have found Performance Werks in Naperville, Illinois. They are the only shop I trust with my two BMW's, after suffering through a variety of over-priced mechanics who thought the customer is just a patsy to run up the charges on, I was relieved to find Blake and Mike. They have an amazing body of expertise, treat me with the utmost in respect, professionalism, and know more about taking care of my babies than any other shop I have used.

I strongly recommend Performance Werks to friends and family, as they are the only shop that I trust. Their work is perfect, their prices fair and honest, and their level of knowledge is unparalleled. When considering repair or maintenance, do yourself and your car a favor, talk to Mike and Blake, you will be as delighted as I have been.

Best Auto Service/Repair in Chicagoland Area If you aren't taking ALL your vehicles to PerformanceWerks, then you are costing yourself money. These guys run the BEST shop I've ever seen. They are very honest technicians that can diagnose anything. They will treat your vehicles as if they are their very own. They don't jack up their rates, or try to rip you off in anyway. I have taken 3 of my vehicles to them, and will be a lifelong customer going forward. 2 of the nicest guys I've ever dealt with when it comes to car service/repair. I'll never deal with a dealership again, even on brand new vehicles. Great, locally owned and operated business. Happy to have them in Naperville. They are a fast, up and coming business and will recommend them to everyone I know.

I RECENTLY STOPPED IN FOR SOME REPAIRS ON MY BMW 330I AND GOT THE BEST DEAL AROUND NAPERVILLE, VERY KNOWLEDGEABLE STAFF, THE OWNERS MIKE AND BLAKE ARE VERY FRIENDLY, WOULD RECOMMEND THIS SHOP FOR ALL AUTOMOTIVE REPAIRS, GREAT PLACE AND VERY CLASSY

great service at a resonable price

i took in my 545i and i was really impressed by the knowladge and the great price, mike was great and he helped me out, he would be the one i would call from now on for any questions about my BMW, thanks Performancewerks