HAMILTON'S STAR SMOG CHECK
HAMILTON'S STAR SMOG CHECK
1032 First St. Novato, CA 94945
Mon - Fri: 8:30 AM - 5:30 PM
Sat: 9:00 AM - 3:00 PM
Sun: Closed
(415) 493-8801
(415) 378-3252 (Call/Text)
Smog Check Specials
$7.00 Off take a pic or mention this posting at checkout for discount.
Price Match Guarantee
Free Retest (2000+ Vehicles)
We get you in and out fast.
Vehicles 2000 and newer ready in 20 minutes
1996-1999 ready in 25 minutes
1976-1995 ready in about 35-40 minutes
The time for your vehicle to be ready may vary, and it depends on the amount of work flow at the time you arrive.
All Vehicles Welcome
We feature a fully operational Dyno lane for 1976–1999 classic models, we offer discounted re-test for 1976-1999 model vehicles.
✅ Gas & Diesel | ✅ Hybrids | ✅ Trucks | ✅ Motorhomes & RVs
We save you time and money by providing the fastest, most reliable smog check service in town. Since 2021, our team has served the community with efficient inspections for all vehicle types—including gasoline, diesel, and hybrid cars, as well as large trucks and RVs. Our certified technicians perform both STAR and non-STAR inspections to ensure your vehicle meets all state requirements. Visit us for a hassle-free experience with most inspections completed in under 30 minutes.
New Service: We now offer smog inspections for heavy-duty diesel vehicles over 14,000 GVWR (2013 and newer), meeting the latest CARB periodic testing requirements for heavy-duty trucks.
Preparing your vehicle correctly before a smog check can significantly increase your chances of passing.
For Vehicles 1996 and Newer
These steps help ensure your vehicle's emissions monitors have completed their "readiness" checks.
Complete a Drive Cycle: Over the days leading up to the test, drive your vehicle for approximately 100 miles under varied conditions (city and highway driving).
VERY IMPORTANT: While driving on the highway, keep the speed steady at 55 mph for 5-10 minutes intervals. Repeat that 3-5 times during the days leading to the day of the test.
Monitor the Dashboard Lights: Before arriving at the test station, ensure the Check Engine or Service Engine Soon light is not on while the vehicle is running. If this light is illuminated, it indicates a fault in the emissions control system. The vehicle must be repaired, and a full drive cycle must be completed again before it can pass the test.
Request a Pre-Check: When you arrive at a smog testing location, ask the technician to perform a readiness check first. Many stations, including ours, offer this pre-check service for free, though policies vary, so always confirm there is no charge beforehand.
For Vehicles 1976–1995
Perform Basic Maintenance: Have an oil change performed, replace the air filter and PCV valve before the test.
Consider a Tune-Up: If your vehicle's last tune-up was more than 50,000 miles ago or if it has been sitting in your driveway for a long time, it is highly recommended to schedule another one.
Check Fuel Level: Ensure the gas tank is between 1/2 and 3/4 full. Do not arrive with a nearly empty or completely topped-off tank.
Warm Up the Engine: Drive the vehicle for 30 minutes to an hour immediately before the test to bring the engine and catalytic converter up to optimal operating temperature and keep the vehicle running until it is hooked to the testing machine.
Seek Professional Advice: If you have concerns about your vehicle's readiness, consider having a professional mechanic perform a thorough inspection and any necessary repairs before the official test.
Disclaimer: These are general suggestions intended to improve the probability of passing a smog check. They are not all-inclusive and do not guarantee that your vehicle will pass solely by following them.
We are a small business locally owned and family-operated committed to making your vehicle registration renewal fast and stress-free. We strive to provide a welcoming environment for every client.
Smog Check Assistance: If you require help paying for a smog check, please talk to us. We would be glad to assist in any way we can.
Veteran & Senior Discount/Recognition: If you are a veteran, please let us know when you visit us.
Thank You: We sincerely thank everyone for their continued support.
2 technicians 2 bays available for fast service
2024 and 2022 porsches getting smog checks simultaneously
we smog large diesel trucks for CARB
we smog large 18 wheeler gas or diesel
we smog motor homes gas or diesel
we smog hybrids
Pass or free retest within 30 days, 2000 & newer models only.
2022 porsche getting smog check
we smog them all