About
Built by a technician who got tired of watching trucks sit in line.
South Bay Mobile Smog is an owner-operated CARB Clean Truck Check provider serving the San Jose Bay Area. We exist for one reason: to make heavy-duty emissions compliance the easiest part of running a fleet.
Every test is run by the same certified technician who answers the phone. No call centers, no shop queues, no surprise fees. We show up when we say we will, plug in, and get your trucks back to work.
Whether you run two trucks or two hundred, we'll build a schedule that fits your operation — including evenings and weekends — and submit every passing test to CARB on the spot.
Pricing and scheduling built around real operations, not retail customers.
You work directly with the certified technician on every visit.
Instant CARB reporting so you're never out of program status.