Unbiased test-only inspections
We operate strictly as a test-only smog station, meaning we never perform repairs or adjustments. You can trust that our results are honest, impartial, and never influenced by upsells or unnecessary charges.
Temecula, California
Walk-in smog inspections and same-day appointments available. Tri-City Smog is a state-certified, test-only station serving Temecula with honest, unbiased emissions testing and no repairs or upsells.

Why choose us
We operate strictly as a test-only smog station, meaning we never perform repairs or adjustments. You can trust that our results are honest, impartial, and never influenced by upsells or unnecessary charges.
We value your time and deliver efficient, friendly service, with most smog inspections completed in 15-20 minutes. Our team is professional, respectful, and focused on getting you in and out without hassle.
We welcome walk-ins and offer same-day appointments to make smog testing as convenient as possible. Whether you plan ahead or stop by, we're ready to help when you need us.
We are a family-owned and operated business serving Temecula with pride. Our reputation is built on integrity, consistency, and treating every customer like part of our community.
About us
Tri-City Smog is a state-certified, test-only smog inspection station serving Temecula. We provide honest, unbiased emissions testing with no repairs or upsells, ensuring complete transparency for every customer. Most smog inspections are completed in 15-20 minutes, with walk-ins and same-day appointments available. As a family-owned and operated business, we take pride in delivering fast, courteous service while remaining fully compliant with California emissions requirements.
At Tri-City Smog, we bring over 40 years of expertise in vehicle emissions testing to the Temecula community. Our mission is to provide precise, efficient, and trustworthy smog inspections for all types of vehicles, ensuring you remain fully compliant with California's environmental standards. Our team of experienced technicians uses state-of-the-art testing equipment to deliver accurate results every time.
Services
Our regular smog inspections ensure your vehicle meets California's strict emission standards. We carefully check all components, provide accurate, DMV-compliant results, and prioritize fast, precise service.
We provide STAR smog inspections for vehicles requiring stricter emissions compliance. Our certified team ensures every vehicle meets the enhanced standards, delivering precise, accurate results efficiently.
Our test-only smog service focuses solely on emissions testing without performing repairs. This ensures unbiased, accurate results, and our team guides you efficiently through the process.
We perform smog inspections specifically for vehicles undergoing title transfers, with accurate, certified documentation that complies with California regulations and DMV requirements.
Moving to California? Our out-of-state smog checks help with DMV registration for vehicles from other states, with complete documentation and professional service.
We provide specialized diesel vehicle smog inspections to ensure compliance with California emissions standards, backed by more than 40 years of expertise.
Our hybrid vehicle inspections are tailored for electric-gas systems, with accurate testing and DMV-compliant certification.
For traditional gasoline vehicles, we provide comprehensive emissions testing with advanced equipment and DMV-compliant certification.
We perform emissions inspections for commercial vehicles of all sizes, with efficient testing and DMV-ready documentation for businesses.
Our heavy-duty vehicle testing helps trucks and industrial vehicles meet California state emissions standards, with thorough inspections and DMV-ready certification.
We offer fleet emissions testing so multiple vehicles remain compliant with California regulations, with precise results and streamlined DMV certification.
Specialized smog testing for recreational vehicles and motorhomes, with accurate documentation for DMV registration.
Walk-in smog inspections with no appointment necessary, and DMV-compliant results delivered efficiently.
Same-day smog inspections to meet urgent compliance needs, with accurate, DMV-certified results.
DMV-required smog certifications for a variety of vehicles and situations, with accurate results and complete documentation.
FAQs
No. We are a test-only smog inspection station, which means we do not perform repairs or adjustments of any kind. This ensures every inspection is unbiased and based solely on your vehicle's emissions results.
Most smog inspections are completed in 15-20 minutes. Our efficient process and experienced technicians help minimize wait times while ensuring accurate testing.
Appointments are not required. We welcome walk-ins and also offer same-day appointments for added convenience at both our Temecula and Menifee locations.
You'll need your vehicle and valid registration or DMV notice if applicable. If you qualify for a discount, please bring valid ID at the time of service.
Service areas
From our Temecula shop we serve drivers across nearby Riverside County communities. Canyon Lake and Hemet are listed separately.
Call (951) 587-6471
At Tri-City Smog, our commitment to Temecula drivers goes beyond basic emissions testing. For over 40 years, we've delivered fast, precise, and trustworthy inspections, helping residents meet California standards while supporting environmental safety.