New Mexico Emissions Test Requirements and Exemptions

New Mexico emissions test requirements apply in one place: Bernalillo County, which covers Albuquerque. If your vehicle is registered there, or you commute into the county often enough, you need a passing emissions certificate before the Motor Vehicle Division will issue or renew your registration.¹ Every other county in the state is outside the program.

Who Has to Test

The rule is in NMAC 20.11.100. It applies to gasoline-powered vehicles with four or more wheels, a gross vehicle weight between 1,001 and 10,000 pounds, and a model year no more than 35 years old.² The 35-year cutoff rolls forward each year, so in 2026 anything from model year 1991 or older ages out.

Living in the county isn’t the only way you end up covered. If you commute into Bernalillo County for work or school 60 or more days per year, your vehicle has to comply even when registered elsewhere.² Vehicles kept on federal installations within the county are also subject to the program.

Testing runs on a two-year cycle tied to registration renewal. One wrinkle catches people: if your emissions come in between 75 and 100 percent of the maximum allowed, the station issues a provisional one-year pass instead of a full two-year certificate, and you’ll test again the following year.² A fresh test is also required any time a vehicle is sold or the title transfers, no matter how recent the last one was.

Which Vehicles Are Exempt

Several categories are excluded from testing outright:

New vehicles for the first four years after initial registration, measured from the manufacturer’s certificate of origin.
Vehicles 35 years old or older. For 2026, that means model year 1991 and earlier.
Fully electric vehicles. Some hybrids that were already exempt under the prior rule keep their exemption until ownership changes.
Diesel vehicles, because the rule’s definition of “motor vehicle” covers only spark-ignition engines.
Motorcycles and three-wheelers, which fall outside the four-wheel requirement.
Heavy vehicles at 10,001 pounds gross vehicle weight or more.
Implements of husbandry and road machinery not regularly driven on public roads.
Vehicles used exclusively for legally sanctioned racing off public streets.
Two-stroke vehicles fueled by a gasoline-oil mixture.

All of these come from the same section of NMAC 20.11.100.² The Motor Vehicle Division confirms the diesel and electric exemptions on its own site.³

What the Test Looks Like

Bring your current registration or original title so the technician can match your vehicle to state records. The technician records the VIN, plate number, and odometer reading during intake.

Testing takes place at certified Air Care stations. There are more than 130 across Albuquerque and Bernalillo County, and the City of Albuquerque runs an online locator that also shows your vehicle’s current emissions status.⁴

What happens next depends on the vehicle’s age. Cars from 1996 and newer get an on-board diagnostics (OBD-II) test: the technician plugs a scanner into the port under the dash, reads any stored trouble codes, and verifies that the vehicle’s internal monitors have completed their self-checks. An illuminated check engine light is an automatic failure, so if yours is on, get it diagnosed before you go. The OBD-II test also includes a pressurized gas cap test and a visible emissions check.⁵

Older vehicles, generally 1995 and earlier that are still within the 35-year window, take a two-speed idle tailpipe test. A probe measures exhaust at idle and again at 2,500 RPM, checking carbon monoxide and hydrocarbon levels against the limits for that model year. These vehicles also get the gas cap pressure test and a tampering inspection to confirm that pollution control equipment like the catalytic converter is still in place.⁵

Stations set their own fees, but plan on about $25 plus tax.⁴ Results upload to the Motor Vehicle Division electronically, and a passing certificate is good for 24 months unless you got the provisional one-year pass.

If Your Vehicle Fails

A failure means the MVD will hold your registration until the issue is resolved. You get one free retest, but it has to be done at the Vehicle Pollution Management Division (VPMD) headquarters at 1500 Broadway NE in Albuquerque rather than at a private Air Care station. Bring the vehicle and the paperwork from the failed test. The retest has to happen within 90 days of the failure.⁴

Common causes of failure include a bad oxygen sensor, a failing catalytic converter, vacuum leaks, or a loose or cracked gas cap. On OBD-II vehicles, the check engine light itself points to stored codes a mechanic can read. After a repair, drive the vehicle for a few days so the engine computer can finish its readiness checks. Retesting too soon often produces a “not ready” result, which counts the same as a failure.

Bernalillo County’s program does not publicize a cost-based hardship waiver of the kind some states offer. If you’ve made good-faith repairs and still can’t pass, contact VPMD directly to talk through your situation.

When the Vehicle Is Out of State

If your vehicle is registered in Bernalillo County but sitting somewhere else, there are two paths.⁶

If the vehicle is in another area with its own emissions testing program, get it tested there and send the passing certificate to VPMD. They’ll issue a one- or two-year waiver certificate the MVD accepts.

If the vehicle is somewhere without a testing program, you can request a one-year waiver. Submit an Affidavit of Vehicle Unavailability and an Affidavit of V.I.N. Inspection, the second of which must be completed and signed by a law enforcement officer or military or campus police to verify where the vehicle is. Include proof of ownership as well: a renewal notice, a copy of your current registration, a copy of the title, or a bill of sale. VPMD accepts submissions by email, mail, or fax and returns a certificate you can use at the MVD.⁶

1
New Mexico Motor Vehicle Division. Does New Mexico Require Emissions Testing
2
New Mexico Compilation of Commission Rules. 20.11.100 NMAC – Motor Vehicle Inspection — Decentralized
3
Motor Vehicle Division NM. Emission Testing
4
City of Albuquerque. Vehicle Emissions Testing
5
US EPA. Part 100 (20.11.100 NMAC) Motor Vehicle Inspection
6
City of Albuquerque. Out-of-State Vehicles and Vehicles Unavailable for Inspection