High performance modification service near Boulder, CO

I was delighted to find Bill’s Crestmoor Automotive and to receive such pleasant, friendly and efficient attention from Weston and Eli, who made this no longer young novice driver feel comfortable and reassured. They were very good value and I shall be going to Bill’s Crestmoor Automotive for all my auto needs in the future. Thank you, Weston and Eli. Marion Blado.

AutoHaus of Boulder was formulated by passion for German automobiles. With over 32 years of experience servicing some of the most technological advanced automobiles in the world, we incorporate technology, trade knowledge and professionalism into everything we do.

Super helpful super honest great work HIGHLY recommended Randy K. Longmont, Co

My wife's 1999 Ford Escort had a problem with its timing belt. We took it to a certain blue and gold auto repair shop on the same street and was told our water pump was to blame. Guess what? The Ford Escorts are designed so that the water pump has no contact whatsoever with the timing belt. We were lied to by that shop. We took our car to Jim Paris instead and got great service. They immediately identified the defective timing belt and honored the warranty on it even though we didn't buy it there. They also repaired some associated issues at no additional charge. I highly recommend Jim Paris and I will go there first next time I need car work done.

Dodge Cummins Only Performance, Maintenance and Repair. We are not just a performance shop. Also do engine rebuilds, transmission rebuilds, turbo, injectors, exhaust, ball joints, gear box. Services: oil changes, transmission, transfer case and driveline. Service all Dodge Cummins trucks from 12 Valve (1988) to present (5.9L, 6.7L, 3.0L, 3.3L, 3.9L, 4.3L). Also service Dodge Eco Diesel. Give us a call.

We love this place! The Owner Darnell, always remembers us by name & KNOWS us & our cars! He takes great care of us & does his 'darndest' to get us taken care of & running in great condition on the road as quickly as possible! In a day where you are unsure who to trust, we choose to trust Colorado Tire & Service. Pam H. Denver, CO

I have only brought our cars in a couple times, but Chuck and his sons have been fantastic. They are very knowledgeable and their prices are lower than any other quotes I got on small and major work I had them do. Last spring while I was waiting in the lobby my son, who has type 1 diabetes had very low blood sugar that I couldn’t keep up after using all of our snacks and juice. I took one of their sodas from the lobby cooler and that did the trick, thankfully. I mentioned to Chuck that he had never had soda before because we try to stick with healthier foods- but when it gets dangerously low you grab whatever you can. Today, 4 months since we were in the shop, we had an appointment and he had gone to the store and bought apples, cookies, and water and said he was thinking of my son and wanted to be sure he had options to choose from if he needed anything. These are more than great mechanics, these are friends, and if I could give them more than 5 stars I would!

Avalon has been fantastic, honest, shares knowledge and offers guidance, excellent mechanical repairs at reasonable rates. We purchased an Audi from a small dealership that did not share all the problems it had. Avalon worked with us to assure auto is safe and running well. Provided me the necessary documentation of repairs to deal with dealership fraud. Thanks