Clean Truck Testers badge Clean Truck TestersHeavy Duty Diesel Inspectors

$40 off a CARB heavy-duty smog check at any of our six stations

Clean Truck Check testing for diesel trucks, RVs and buses across the Inland Empire and High Desert. Same-day appointments, and if your vehicle doesn't pass, you don't pay.

Pick the station closest to you

All six run the HD/IM Clean Truck Check test for 2013-and-newer trucks, the smoke opacity test for 2012-and-older trucks, and CARB and RV smog checks. The $40 coupon is good at every one of them.

Every station is open Monday to Friday 9 am to 5 pm, Saturday 9 am to 4 pm, and Sunday by appointment.

Show this coupon at the counter and save $40

Screenshot it, print it, or just pull this page up on your phone when you arrive. One coupon per vehicle per test, good on any CARB heavy-duty smog check for a limited time.

Prices before and after the $40 coupon

Prices are per vehicle. If a vehicle doesn't pass, you don't pay for the inspection.

TestTimeList priceWith coupon
HD/IM Clean Truck Check testModel year 2013 and newerAbout 1 hour$160$120
Heavy-duty smoke opacity testModel year 2012 and olderAbout 1 hour$220$180
Mobile service trip feeWe come to you anywhere in Southern CaliforniaAny hour, day or night$50$50
The coupon applies to the test, not the mobile trip fee. Corporate fleets are welcome; give us a call.

Which trucks have to test under CARB's Clean Truck Check program

Most non-gasoline vehicles of 14,000 lbs or more

CARB's Heavy-Duty Inspection and Maintenance program covers nearly all non-gasoline vehicles with a gross vehicle weight rating of 14,000 pounds or more that operate in California, RVs and buses included.

Twice a year for most vehicles

Plan on two compliance tests per truck each year under the current CARB schedule. If you aren't sure when your next one is due, call us.

Register with CARB before your first test

Your vehicle needs a CARB Clean Truck Check account before a test can be submitted. Register at cleantruckcheck.arb.ca.gov, or call us and we'll walk you through it.