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← BackNew Mexico DWI Questions — Answered
Real answers to the most common questions after a New Mexico DWI arrest.
Last updated: March 3, 2026
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Key questions after a New Mexico DWI: Does NM use a lifetime lookback? (Yes — old DWIs never expire for prior-offense purposes.) What is Aggravated DWI? (BAC 0.16%+ or test refusal — carries mandatory 48 hours jail.) Is interlock required for first offense? (Yes — mandatory for all convictions.) What is a DWI screening? (A required substance abuse assessment that determines your treatment level.)
You have 10 days from the date of your arrest to request a hearing with the New Mexico Motor Vehicle Division (MVD) to contest your license revocation. Missing this deadline results in automatic revocation. Act immediately — do not wait for your criminal case to proceed first.
New Mexico uses a lifetime lookback period for DWI offenses — meaning a DWI from 20 or 30 years ago can still count as a prior offense. This is one of the harshest lookback policies in the country. There's no "washing off" old DWIs in New Mexico.
An Aggravated DWI in New Mexico applies when your BAC was 0.16%+, you refused a breath or blood test, or you caused an accident involving bodily harm. Aggravated DWI carries mandatory minimum jail time of 48 hours for a first offense and significantly harsher penalties than standard DWI.
No — a second DWI is still a misdemeanor in New Mexico. A third DWI within 10 years becomes a fourth-degree felony. A fourth and subsequent offense is a third-degree felony. The lifetime lookback means priors never expire, but felony charging uses the 10-year window.
Yes. New Mexico requires an ignition interlock device for all DWI convictions, including first offenses. The interlock must be installed on any vehicle you drive and must remain in place for 1 year (first offense), 2 years (second offense), or 3 years (third offense). New Mexico also participates in the interlock indigency fund for low-income drivers.
Refusal is allowed but triggers automatic license revocation for 1 year under New Mexico's Implied Consent Act. Refusal also results in mandatory ignition interlock installation once your license is reinstated. Prosecutors can use your refusal as evidence of guilt in criminal proceedings.
Total costs for a first DWI typically range from $8,000–$18,000+, including: fines ($500–$1,000), court costs and surcharges, attorney fees ($2,500–$8,000), DWI school and screening fees, ignition interlock ($1,500–$2,000/year), and insurance increase (~$1,500–$3,000/year for 3–5 years).
Not necessarily. A standard first DWI has no mandatory jail time — the judge can sentence up to 90 days, and may order at least 48 hours of community service or a $300 fine. Aggravated DWI (BAC 0.16%+, a test refusal, or a crash causing injury) carries at least 48 consecutive hours in jail that cannot be suspended.
After a DWI arrest, New Mexico requires a DWI Screening — a substance abuse assessment by a certified counselor. Based on the results, you may be required to complete education, outpatient treatment, or intensive outpatient treatment before you can reinstate your license. Costs range from $200–$1,500+ depending on the recommended level.
New Mexico passed expungement legislation in 2019, but DWI convictions have strict eligibility requirements. Most DWI convictions are not eligible for expungement. Deferred sentences that were dismissed after successful completion may be eligible. Consult a New Mexico DWI attorney to evaluate your specific case.