Regular and Star Smog Testing cars DIESELS HYBRIDS MOTORHOMES VANS TRUCKS

Welcome

Prof Smog specializes in smog testing and certification in Pinole, California, serving Contra Costa County. Prof Smog is an owner-operated business . We smog test and certify vehicles whether or not they are required to go to a Smog Test Only Center or a STAR Certified smog station - Prof Smog is Test Only and STAR Certified. We've been in business for over 20 years, and our owner has over 25 years of experience. We offer smog and emissions tests at competitive prices, and if your vehicle passes, we'll issue your certificate.

We have 4 parking spaces labeled 5.1 &5.2. We have 40 feet of space in front of our shop allowing us to handle larger vehicles such as motorhomes. We also might be able to smog your F150 Harley Davidson pickup - please call to verify first.

We believe in a clean environment and clean air for us and our families. Our objective is to pass the vehicles that should pass and fail the vehicles that should fail: Quality and Integrity matters here. We believe that in this way we are doing our part in helping the environment as a business and offering our customers the best service we can. When a vehicle fails the smog test, it indicates a potential problem on the vehicle that needs to be addressed. This may help improve vehicle performance or mileage. Also, we believe this may be why we are not just STAR but one of the higher performing STAR stations. Please view the Quality Matters page for more information. Thank You.

Most other smog stations only take customers on a first-come, first-serve basis, possibly creating long lines and wait times. Appointments are available and currently needed so that your service is prompt. On time appointments have priority, but we may take drive-ins if time is available. Contact us at 510-724-9753 today to make an appointment! If email use smog for the subject line - we usually respond more quickly to telephone (usually fastest response) or text messages.

Current Hours

By Appointment

Mon Tue Thu Fri Sat 9:15 AM - 5:00 PM

Closed Wednesdays, Sundays, Holidays, and Lunch

Appointments Needed

Please call if not in

We are frequently happy to set up appointments or come in for you

Call 24 Hours In Advance to Cancel

Drive-ins welcome if time available

ANY QUESTIONS ASK BEFORE MAKING APPOINTMENT.

PEOPLE THAT MAKE APPOINTMENTS WITH NO INTENTION OF KEEPING THEM ARE VERY RUDE AND VERY MEAN. THIS INCLUDES PEOPLE THAT MAKE APPOINTMENTS THEN GET IT DONE ELSEWHERE. This makes up a large part of the blocked numbers list and numbers on the Do Not Do list. We have gotten so many no shows or short notice cancels that we now have a strict policy against them. It has gotten so bad that we may stop accepting new customers without referrals or non-refundable deposits.

Please pay DMV fees on time to avoid DMV penalties as stated on the back of the DMV renewal notice. Please be sure to use government site - other sites will charge more. Please use:

dmv.ca.gov

if passed smog does not show 3 hours after passing manually input information

virtual.dmv.ca.gov

Online: Even if the first line says that the online registration cannot be completed at this time, please read the statement in its entirety - you may still be able to pay the fees, and you may receive a Notice of Incomplete Renewal. This does not make it legal to drive the car after the registration expires but at least you may avoid DMV penalties. Temporary operating permits or one day moving permits may be available - if needed, ask DMV.

Come see us for smog testing and certification.

Please Bring Your DMV Renewal Slip.

Please be aware that mapping programs do not necessarily lead you to the correct location. Our complex goes completely around 720. We are at the driveway just past the white water hydrant and just before Walter. Please see map on contact us page.