Compliance made easy.
We come to you!
If your diesel vehicle needs a smoke opacity test, you don’t have time to waste. At Darling Smog, we offer mobile CARB-compliant smoke opacity testing for trucks, fleets, and RVs (and more!) anywhere in Glendora, the San Gabriel Valley, or Greater LA.
We’re a woman and veteran-owned shop that understands the pressure to stay compliant without losing a day of work. That’s why we bring the test site to you.
What We Test:
2012 and older vehicles that need smoke opacity and visual tests
2013+ vehicles that need OBD II testing
And alternative fuel vehicles that need visual inspections
Where We Go:
We offer on-site mobile testing throughout:
Glendora, Covina, Azusa, La Verne
Los Angeles & San Gabriel Valley
Job sites, yards, terminals, and even authorized parking lots
Why Choose Darling Smog?
Fully CARB-compliant
Fast, mobile appointments
No upsells, only testing
Same-day and emergency slots may be available—please call 626-551-4555 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.
