10/12/2026
If your diesel is coming up on registration renewal, that emissions test isn’t just another box to check.
In Colorado, light-duty diesels four years and older are required to pass emissions testing to renew their registration, with older diesels needing testing more frequently.
Here’s where we make things easier. We’re one of the few state-certified facilities that can test light-duty and AWD diesels, and because diesel service and repair is what we do every day, you don’t have to bounce between a testing station and a repair shop if your truck doesn’t pass.
Want to know when your diesel needs testing, what we test, and what to expect when you come in? Click here branchautomotive.com/diesel-emissions-testing/ to learn more.