When registering a vehicle in the state of New Mexico, you must appear in person at an MVD Field Office equipped with the following paperwork:

• Bill of Sale (Form 10009): Only required when the Assignment of Title or Dealer Assignment is not completed on the back of the title.
• Certificate of Title: The current outstanding title must be signed by the former owner, and no copies are accepted.
• Odometer Statement: The buyer and seller must agree on the odometer reading. This may be shown on the title, a bill of sale, an odometer disclosure statement, or the application form.
  • Or Application for Title and Registration | MVD Form 10002
• Proof of Identity
• Proof of Insurance: New Mexico requires minimum liability coverage of:
  • $25,000 for bodily injury or death of one person
  • $50,000 for bodily injury or death of two or more persons
  • $10,000 for property damage in any one accident.
• Proofs of New Mexico Residency: Two are required.

Out-of-State Purchase

• VIN Inspection: Required only for vehicles coming to New Mexico from another state.

Notes

• Emission Certificate of Inspection is required only for Bernalillo County residents.
• Lienholder Information is required only if there is a lienholder on the vehicle.

Source: New Mexico MVD (Register a Used Vehicle)

There is no general requirement to register a firearm after purchase in New Mexico.