Clean Truck Check questions, answered.

The Clean Truck Check is a California program that requires most non-gasoline heavy-duty vehicles over 14,000 lbs GVWR operating in California to have periodic emissions compliance testing. It applies to California-registered trucks and many out-of-state trucks that operate in the state.

If you operate a non-gasoline heavy-duty vehicle over 14,000 lbs GVWR in California, you likely need to comply. That includes owner-operators, small fleets, and many local service vehicles. If you're not sure, call or message us and we'll walk through it with you.

Most covered vehicles need testing on a recurring schedule set by the state. Frequency depends on the vehicle type and model year. We'll help you understand your specific schedule during booking.

A typical Clean Truck Check compliance test takes around 20 to 40 minutes depending on the vehicle and test type. We respect your time and your route — we aim to get you in and out quickly.

Bring your vehicle registration, VIN, and any previous compliance paperwork you have. If you booked online, you'll get a checklist by email after scheduling.

Yes. We handle small owner-operator setups and multi-truck fleets. If you manage a fleet and want recurring testing on a schedule, contact us for fleet pricing.

We are a credentialed Clean Truck Check tester. We do not claim to be a state endorsement or official CARB partner — we follow the state's credentialing requirements to perform the test.

We primarily serve the San Fernando Valley including Chatsworth, Canoga Park, Woodland Hills, Northridge, Reseda, Tarzana, Encino, Van Nuys, Panorama City, Granada Hills, and Porter Ranch. Surrounding Los Angeles area locations are welcome — just ask.

The fastest way is to book directly on our booking page using the online calendar. You can also call or send us a message and we'll get back quickly during business hours.