Mobile Smoke Opacity Testing in Glendora, CA
We come to you anywhere in the Glendora area!
If your heavy-duty diesel vehicle needs a smoke opacity test, we’ve got you covered in Glendora and the surrounding foothill cities. At Darling Smog, we provide mobile CARB-compliant smoke opacity testing for trucks, RVs, and fleets without the hassle of driving to a shop.
We offer mobile options to make compliance easy!
Who We Test:
Diesel trucks & RVs
Local contractor fleets
Owner-operators
CARB Clean Truck Check vehicles
Why Choose Darling Smog?
✅ Fully CARB-compliant
✅ Fast, mobile appointments
✅ No upsells, only testing
✅ Same-day and emergency slots may be available—please call or inquire online
We’re licensed, friendly, and efficient. You’ll always know what to expect. We’re here to make compliance easy.
Ready to Book?
Whether you’re managing a fleet or just need your RV tested before hitting the road, we’re ready to meet you where you are.
Located right off Route 66 near Juiced Performance, we also offer on-site tests.
