To register your car in Colorado, you need to provide the following:

1. Secure and Verifiable ID (such as a Colorado driver's license or ID card).
2. Proof of ownership: vehicle title in your name or current out-of-state registration (no more than six months expired).
3. Proof of insurance that meets Colorado minimum liability coverage requirements.
4. Verification of Vehicle Identification Number (VIN) through a completed VIN verification form, which must be done by a licensed dealer, law enforcement, or emissions technician.
5. Proof of emissions test, if applicable (required in certain counties for gasoline/hybrid vehicles, exempt for newer model years).
6. Payment for registration fees and taxes, which vary based on vehicle weight, value, and other factors.
7. Proof of Colorado residency (such as a Colorado ID, utility bill, lease agreement, or paystub).

If you're a new resident, you must register your vehicle within 90 days of establishing residency. Registration is typically done at your local county motor vehicle office, and you may need to make an appointment. Additional notes:

• If purchasing from a private party, you'll also need a bill of sale.
• Military members have specific options for registration based on their status.
• Fees include a license fee and an ownership tax.

This covers the key requirements for vehicle registration in Colorado.