Temecula, CA

Welcome to Tri-City Smog - For over 31 years, Tri-City Smog has been the go-to destination for reliable, unbiased vehicle emissions testing in Temecula and Menifee, CA. As a family-owned business since 1994, we’ve built our reputation on honesty, efficiency, and exceptional customer service. Our ASE-certified technicians deliver fast, accurate results—typically within 15 to 20 minutes—so you can get back on the road with confidence. Whether you drive a compact car, a heavy-duty truck, or manage a commercial fleet, we’re here to keep your vehicle compliant and your day moving.

At Tri-City Smog, we’re proud to be a test-only facility, offering impartial evaluations with no conflict of interest. Our streamlined process ensures your vehicle meets all required emissions standards without the hassle. We’re committed to making your experience smooth and stress-free, backed by decades of expertise and a deep connection to our community. From daily drivers to business fleets, we treat every vehicle with care and every customer with respect. Ready to get started? Contact us today and let Tri-City Smog take the guesswork out of emissions testing.