We are a locally owned and operated business that has been serving Sonoma County for over 10 years. We are committed to providing you with fast,friendly and quality service. If you don't have time to make an appointment,don't worry you can just drop on by at your convenience and you should't have to wait for more than 30 minutes. We have comfortable waiting rooms complete with FREE WIFI. Diesel Smog testing began 1-1-2010. 1998 and newer diesel vehicles with a GVWR under 14000 pounds will need a smog inspection certificate for bi-annual DMV registration renewal and transfer of ownership. We are able to perform a smog check or smog inspection on any vehicle for registration renewal,transfer of ownership,or out of state vehicles. We have the latest equipment and technology available to ensure the most accurate results. Our Dynamometers a