Clean Truck Check Compliance for Out-of-State Vehicles
If you’re bringing out-of-state heavy-duty vehicles or DMV Exempt Plated Vehicles into California, the Clean Truck Check program requires emissions testing based on the last digit of your Vehicle Identification Number (VIN). Following this schedule is essential to avoid fines and compliance issues.
How the VIN-Based Schedule Works
Starting in 2025, each vehicle must:
Pay an annual fee.
Complete emissions testing twice a year.
Testing months are assigned based on the last digit of your VIN:
0: April & October
1: May & November
2: June & December
3: January & July
4: February & August
5: March & September
6: April & October
7: May & November
8: June & December
9: January & July
Key Points to Remember
Check Your Deadlines: Your schedule is based on your VIN, not your registration or out-of-state requirements.
Avoid Late Fees: Missing deadlines can lead to fines or restrictions on your vehicle.
Plan Ahead: Testing is required twice a year, so schedule early to avoid conflicts during busy times.
Optimize Trips: If your truck is already in California during testing months, plan tests accordingly to avoid disruptions.
By following the Clean Truck Check schedule, you can stay compliant and avoid unnecessary penalties.
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