Weissach Performance

Mike has been working on my cars for years! He is such a great guy. Honest, kind and very knowledgeable. Thanks for everything, Mike!

Mike has serviced and done repairs on my family’s cars for the past 10 years and always does a great job. He’s honest and very reasonable with pricing; we know that when he says something needs to be fixed, it really does need to be fixed.

Mike misdiagnosed my car, saying that i need a total engine rebuild, charging me 600$ for faulty results test, telling me my car lost all the compression thus i need to change all the piston rings. I wasn't ready to pay 5000-6000$ for an engine rebuild so I had to tow my car back to my place. So when i got home, i took the valve cover off and to my big surprise - all the push rods were bent, which means they got bent BECAUSE OF STUCK OPEN INTAKE VALVES caused of running on an old gasoline that i drove my car when i just bought it. This is where all the compression was lost. When I called Mike and told him about it, he kept saying that I am in the wrong, and it's 100% the rings. So i called my friend, we bought some brake cleaners, put some rope in each stuck valve chamber and easily releas

Went to Mike the owner. He was incredibly professional and knowledgeable. I will definitely be doing business with him again in the future

Mike is awesome I have had multiple cars serviced with him ! All makes and all models!! Best shop in Boulder!!