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.
Menifee, California
Walk-in smog inspections and same-day appointments available. Tri-City Smog is a state-certified, test-only station serving Menifee 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 Menifee 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 Menifee. 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.
For more than 40 years, Tri-City Smog has delivered accurate, unbiased, and efficient state emissions testing services to drivers throughout Menifee and surrounding communities. As a test-only smog inspection station, we focus exclusively on emissions testing, ensuring every result is honest, compliant, and free from conflicts of interest. Our experienced technicians use advanced diagnostic equipment to inspect gasoline, diesel, hybrid, and heavy-duty vehicles.
Services
Our regular smog inspection services ensure your vehicle meets California emissions standards. We conduct compliant testing using certified equipment and keep customers informed throughout the inspection.
Our STAR smog inspection services meet California's enhanced testing requirements. We are fully authorized to inspect STAR-designated vehicles.
As a test-only station, we provide impartial smog checks without performing repairs — honest, regulation-compliant results for DMV registration and renewal.
Title transfer smog checks required during vehicle sales, with accurate testing, proper documentation, and timely electronic certification.
Out-of-state smog checks for drivers registering vehicles entering California, following all emissions guidelines closely.
Diesel smog check services using specialized testing equipment to evaluate compliance with California diesel emissions standards.
Hybrid vehicle smog inspections using approved testing methods, with technicians who understand hybrid systems.
Gas vehicle smog inspections for a wide range of passenger vehicles, supporting registration renewals and DMV certification.
Commercial vehicle smog inspections for businesses and work fleets, with efficient testing and fast certification processing.
Heavy-duty emissions testing for larger vehicles subject to California regulations, including trucks, work vehicles, and specialized equipment.
Fleet emissions testing for businesses managing multiple vehicles, with a streamlined process that reduces operational interruptions.
RV and motorhome smog inspections designed for larger recreational vehicles, helping owners maintain compliance and registration eligibility.
Walk-in smog inspections for drivers seeking fast service, with prompt, accurate, regulation-compliant testing.
Same-day smog inspection services for busy schedules, with efficient, regulation-compliant testing and electronic certification.
DMV-required smog certification immediately after testing, with accurate electronic reporting for registration, renewals, or transfers.
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 Menifee shop we serve drivers across nearby Riverside County communities. Canyon Lake and Hemet are listed separately.
Call (951) 672-1311
At Tri-City Smog, our mission is to provide dependable, unbiased emissions testing that drivers can rely on. Serving Menifee, we combine over 40 years of experience with modern testing technology to deliver consistent, regulation-compliant results.