A New Mexico driver license is valid for either four or ________ years.

A New Mexico driver license is normally valid for four years. However, you have the option to obtain an eight-year license if you are neither younger than 21 years of age nor older than 70 years of age. Note: If you are at least 79 years of age, you must renew your license every year. [Driver License Renewal, The Driver License, New Mexico Driver Manual]