We come to you—on-site emissions testing that’s fast, certified, and California-compliant.
HEAVY-DUTY DIESEL SMOG CHECKS
On-site smog checks for heavy-duty diesel trucks (Class 7–8)
DELIVERY AND CARGO VANS
Fleet contracts and recurring service plans
MOTORHOMES AND RVS
Emissions testing for motorhomes and RVs
From Riverside to the Coachella Valley—We’ve Got You Covered
/ about us /
We Service All Major Rigs, Fleets, and RV Brands
At Mobile Smog HD, we understand the value of your time and the cost of taking rigs off the road. That’s why we bring certified smog testing directly to your lot—whether you’re managing a fleet of big rigs, driving a diesel pusher, or operating from a transit yard. With fast, compliant service and no disruption to your schedule, we keep your trucks and RVs rolling and road-legal. From Riverside to the Coachella Valley, we’re Southern California’s trusted mobile emissions partner.
KNOW THE RULES FOR EMMISSIONS
Semi-Annual testing from 2025
January 1, 2025, all regulated heavy-duty vehicles must undergo emissions testing twice per year
On-Road and Mobile Testing Allowed
Heavy-duty smog tests can be completed on-site—no need to visit a fixed station
Motorhomes Subject to Clean Truck Check
Diesel motorhomes over 14,000 lbs require registration in the Clean Truck Check program and annual or semi-annual testing
OBD Requirement Since 2013
Engines manufactured from 2013 onward must have CARB-mandated OBD systems, allowing streamlined testing
International
International
/ expertise /
Where Convenience Meets Compliance
Whether you drive a Freightliner, Mack, Kenworth, Peterbilt, or Winnebago—we’re equipped to handle your smog check needs. Our mobile service is fully compliant with CARB requirements and compatible with all major diesel engine platforms, 2013 and newer.
OUR
SERVICES
SERVICES
- On-site smog checks for heavy-duty diesel trucks (Class 7–8)
- Mobile emissions testing for RVs and diesel motorhomes
- OBD-II testing for 2013 and newer engines
- Support with account set-up with CARB
- Compliance testing for CARB’s Clean Truck Check program
HOW WE’RE DIFFERENT
- Flexible scheduling with early morning and weekend availability
- Mobile service at distribution centers, fleet yards, and job sites
- Fleet smog check programs and recurring service contracts
WHO
WE SERVE
WE SERVE
- Logistics companies
- Trucking fleets
- Distribution centers
- Owner-operators
- RV owners and diesel pushers
