C3 Fleet Services is a CARB-credentialed, fully mobile Clean Truck Check tester serving Tulare County and the surrounding region. We drive the equipment to your trucks — no routes broken, no yard visits, no downtime.
Complete testing to keep your fleet compliant with California's Clean Truck Check (Heavy-Duty Inspection & Maintenance) program.
We bring the equipment to your yard, terminal, or job site — single trucks or full fleets, no route or route downtime.
On-board diagnostics testing for 2013+ vehicles equipped with OBD systems, submitted directly through the CARB Clean Truck Check portal.
Test results submitted and tracked for you, so your fleet stays ahead of Clean Truck Check reporting deadlines.
No hidden fees, no per-mile surprises for local jobs. The more trucks tested in one visit, the lower the per-truck rate.
Note: This covers the OBD emissions test only, for 2013+ vehicles equipped with OBD. We do not currently offer opacity (smoke) testing for pre-OBD vehicles.
Per-truck pricing is separate from CARB's annual Clean Truck Check compliance fee, which is paid directly to the state.
Mobile OBD testing elsewhere in the Central Valley often runs $130+ once base test and mobile fees are combined — our per-truck rate has no separate mobile fee, and drops further the more trucks you test in one visit.
No need to drive trucks off-route or lose a day at a shop. Testing happens where your trucks already are.
Pick a time that works for your operation — single truck or full fleet.
Our mobile testing unit comes to your yard, terminal, or job site in Tulare County and surrounding areas.
OBD testing performed right where your trucks are parked — no downtime, no towing, no lost routes.
Your results are submitted through the CARB Clean Truck Check portal and you get documentation for your records.
Straightforward, credentialed testing from someone who understands trucking operations.
Officially credentialed under California's Clean Truck Check program — testing you can trust and verify.
We come to your yard, terminal, or job site — your trucks never leave the route.
Straightforward rates for single trucks and multi-vehicle fleets, with no surprise fees.
Based in Tulare County. Call or email directly — you'll talk to the person doing the testing.
C3 Fleet Services is based in Tulare County and serves fleets and independent owner-operators throughout the surrounding Central Valley region.
Reach out by phone or email to schedule testing or ask a question about the Clean Truck Check program.
Tulare County & surrounding areas