Bosch Automotive Motor Systems 821 Petaluma Boulevard North, Petaluma, CA 94952

"My go to dependable mechanic diagnosed our 2003 Miata check engine light caused by a misfire and said a valve leak might be the problem. He said he could not work on it and suggested two other local shops. I tried each and neither could do the job, one saying the reason is there are few automotive machine shops left that can grind valves or do deep engine work. It took a while to find BOSCH AUTOMOTIVE in Petaluma to take on the job. There was a three week wait and another three weeks in the busy garage to complete the work, but entirely worth it. Ernesto discovered multiple valves burnt and in need of replacement. Our wonderful little ride is back to life in tiptop shape, quieter, smoother than in a long time; the pesky check engine light vanquished."

"i was calling in because i used to know the previous owner. the old cranky lady that answered the phone must have been raised in a trailer park. She was so rude and then hung up on me. What kind of business hangs up on someone calling to ask questions. please take your business somewhere with manners and phone etiquette."

"I was a customer several years ago. Ernesto and his crew helped with and engine removal and install on my 73 Charger, as well as a very complicated fuel injection modification. Ernesto went above and beyond for over a year to help get my car, a family heirloom, back on the road! He taught me so much during the build and everyone made me feel more like a friend than a client. They value their clients and are the epitome of the trustworthy mechanic!"

"Brought my 1997 4 Runner here for valve cover gaskets, smog certification and oil change. Rod and Ernesto gave me great service, provided a written estimate, did great work and it was ready as promised. A good experience."

"Ernesto is a genius. His knowledge is matched only by his sincerity and integrity. They are often a bit booked up, but worth the wait."