Home to Southern California’s
Best-in-Class Mobile Diesel Emissions Testing.
Smog Brothers is committed to providing professional, reliable mobile diesel emissions testing throughout Southern California. With a focus on integrity, quality, and exceptional customer service, we bring certified testing directly to you—whether you need service for one vehicle or an entire fleet.
Our Services
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Smoke Opacity Testing
Certified snap acceleration testing for applicable heavy-duty diesel vehicles under California’s Clean Truck Check program. Testing is performed using a calibrated smoke opacity meter to accurately measure exhaust smoke levels and verify compliance with state emissions standards.
OBD Testing
Official OBD emissions compliance testing for vehicles enrolled in California’s Clean Truck Check program. Calibrated diagnostic equipment verifies emissions system readiness, scans for active fault codes, and confirms compliance with CARB regulations to keep your vehicle legally operating.
Service Areas
Proudly Serving Riverside, San Bernardino, Orange, San Diego, and More Across Southern California.
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Mobile Diesel Emissions Testing
Serving All of Southern California
