N.M. Stat. § 66-13-4
Guilty pleas; limitations.
When a complaint or information alleges a violation of Section 3 [66-13-3 NMSA
1978] of the Boating While Intoxicated Act, any plea of guilty thereafter entered in
satisfaction of the charges shall include at least a plea of guilty to the violation of one of
the subsections of Section 3 of that act, and no other disposition by plea of guilty to any
other charge in satisfaction of the charge shall be authorized if the results of a test
performed pursuant to that act disclose that the blood or breath of the person charged
contains an alcohol concentration of eight one hundredths or more.