N.M. Stat. § 42-10-6
Personal property used as a security under the Uniform
Commercial Code is not exempt.
A secured creditor who has personal property of the debtor as security as provided
by the Uniform Commercial Code [Chapter 55 NMSA 1978] may proceed according to
the terms of the security instrument and the Uniform Commercial Code. The debtor
cannot exempt personal property given to a secured creditor as security unless there be
more property than is necessary to pay the debt to the secured creditor. The debtor may
claim an exemption out of the surplus.