Arizona Emissions Testing in Mesa: Who Needs It, Where, and What It Costs

This guide is written and maintained by Goran Grozic, owner of AZ Auto Gallery, who has run a used-car lot at 6608 E Main St in East Mesa for more than a decade. Here is the short version, with every figure verified against ADEQ's program pages on November 7, 2026.

• **Area:** Mesa and ZIP 85205 are inside ADEQ Area A, the Phoenix metro emissions control region.
• **Who tests:** Gas, diesel, flex-fuel (E85), and hybrid vehicles that are model year 1967 or newer and more than five years old. Fully electric vehicles and pre-1967 vehicles are exempt.
• **Cost in the Phoenix area:** OBD test $16.15, IM147 dynamometer test $16.15, steady-state loaded or idle test $15.20, loaded-opacity test $15.20, snap-opacity test $23.75.
• **How long it lasts:** A 1981-or-newer light-duty gas car is tested every two years, so a pass covers your two-year registration cycle. Vehicles from 1980 and older are tested every year.
• **Closest station to the lot:** The ADEQ Ivy station, 4442 E Ivy St, Mesa, AZ 85205, in the same ZIP code as our showroom. Open Monday through Saturday, 8 A.M. to 5 P.M.
• **If it fails:** Repair and retest, or pursue a one-time waiver after you meet the state's repair-cost limit.

The rest of this page explains each of these in plain terms for a Mesa buyer, whether you are renewing a car you already own or looking at used cars in Mesa.

Arizona only tests vehicles in two metro regions that have struggled to meet federal air quality standards: Area A around Phoenix and Area B around Tucson. Area A is the expanded Phoenix metropolitan area and covers portions of Maricopa, Pinal, and Yavapai counties; its legal definition lives in Arizona Revised Statutes section 49-541. Mesa is core Phoenix-metro territory in Maricopa County, and ZIP 85205 in East Mesa is firmly inside Area A, so if your car is registered at a Mesa address the testing rules below apply to you.

The program is tied to where a vehicle is registered, meaning the owner's permanent and actual residence, not to a city name. That distinction matters only at the far southeast edge of the Valley, where the Area A line runs through parts of Queen Creek, San Tan Valley, and Pinal County and some addresses fall outside the testing area. If you live out near that boundary rather than in Mesa proper, confirm your status with ADEQ's ZIP code look-up before you assume you are exempt. People who live outside Area A but regularly commute into it for work or school are also required to test.

The vehicle rule itself is straightforward: a vehicle that is model year 1967 or newer and more than five years old needs a passing emissions test, and that includes gasoline, diesel, alternative-fuel, flex-fuel (E85), and hybrid vehicles. Fully electric vehicles are exempt. Motorcycles have not been required to test since June 21, 2013. The MVD will not renew your registration until a current passing test is on file, and your registration renewal notice tells you whether a test is due this cycle and which one. If you are new to the state, the test is also required before you can register a vehicle you brought with you; our guide on moving to Arizona and registering a car walks through that sequence, and registering a car in Arizona covers the MVD side. One useful fact for buyers: Arizona requires a licensed dealer to have a vehicle pass emissions before selling it, so a car from a dealer comes with a current test already done, while a private-party purchase can leave the test as your responsibility. Our guide on buying from a dealer versus a private seller breaks down that and other cost differences.

Arizona's testing is run by a state contractor at dedicated emissions stations, not at repair shops or the MVD. You cannot test at the dealership and you do not need an appointment; testing is first come, first served. For an East Mesa address the closest options are:

The Ivy station is the one most East Mesa drivers use because it shares the 85205 ZIP code with our showroom and is only a few minutes from Main and Recker. Every station above has an OBD express lane, a faster line for 1996-and-newer gasoline vehicles and 1997-and-newer diesels under 8,500 pounds, which covers the large majority of cars on the road. Stations are closed on major holidays: New Year's Day, Martin Luther King Jr. Day, Presidents Day, Memorial Day, July 4, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas. Lines are shortest mid-month and during weekday late afternoons or Saturday afternoons, so avoid the end of the month if you can. Waiver and referee stations, used only when a car fails repeatedly or has a special inspection need, are separate locations with shorter weekday hours; those are covered further down.

The fee depends on which test your vehicle gets, and that is determined by its model year, fuel type, and weight. These are the current Phoenix-area fees:

Most cars built since 1996 get the OBD test, where an inspector plugs into the diagnostic port under the dash, reads the engine computer, and confirms the check-engine light works. It is quick and uses the express lane. Older gasoline cars from 1981 through 1995 run the IM147, a loaded-mode test on a dynamometer (rollers) that measures tailpipe output while the car is driven at varying speeds. The oldest gas cars, 1967 through 1980, and heavy-duty gas vehicles use the steady-state loaded or idle test. Diesels are handled by fuel and weight: 1997-and-newer light-duty diesels in Phoenix take the OBD test, while other diesels are measured for smoke density, either loaded opacity or, for heavy trucks, snap-acceleration opacity. Stations accept cash, in-state personal checks with ID, and credit or debit cards.

These fees are set by ADEQ and go to the state's testing contractor, not to the dealer. They are separate from the price of the car itself. At AZ Auto Gallery we price every car once, with no haggling, and because Arizona requires a licensed dealer to furnish a passing test before a sale, a car that needs one leaves our lot at 6608 E Main St with a current certificate already done. If you want the full list of what to bring to the lot and what you leave with, see the documents you need to buy a car in Arizona, and if you are budgeting the full out-the-door number, our financing page and the Arizona VLT calculator help you plan registration costs.

A failed test is not the end of the road, but it does have a defined path. First, understand the difference between a rejection and a failure. If the check-engine light is on, or if the readiness monitors the OBD test checks are not set (common after a recently cleared code or a disconnected battery), the station cannot complete the test and will reject the vehicle rather than fail it. The fix is to complete a normal drive cycle, which is several days of ordinary mixed driving that lets the car's monitors reset, then return. A true failure means the emissions readings or visual inspection did not meet the standard.

If you fail, repair the fault listed on your report and retest. You may qualify for the state's Voluntary Vehicle Repair Program (VVRP), which pays up to $900 toward emissions-related repairs with a $100 co-pay; you apply within 60 days of a failed required test, it is limited to one vehicle per owner, and the car must be titled and recently registered in Arizona and free of tampering. ADEQ removed the old model-year age restriction on this program in 2021, so eligibility is no longer based on how old the car is.

If the car still will not pass after you have spent the required amount on repairs, Arizona offers a one-time waiver. To qualify, the vehicle must fail at least twice in the current test cycle, you must have a low-emissions tune-up performed after the first failure, and you must bring the last failing report plus your repair receipts or estimates to a waiver and referee station. A waiver is granted only if the remaining repairs would exceed the maximum repair-cost limit for your vehicle's age:

A vehicle can receive only one waiver ever, and it is valid for the current registration cycle only. A $15 fee applies when the waiver or compliance document is issued. A waiver will not be granted to a car emitting more than twice the standard, one with a faulty catalytic converter, or one whose emissions equipment has been removed, altered, or defeated. In Maricopa County you file at a waiver and referee station: the Madison station at 4949 E Madison St, Phoenix, AZ 85034, or the 23rd Ave station at 10210 N 23rd Ave, Phoenix, AZ 85021, both open Monday through Friday, 8 A.M. to 4:30 P.M.

Two categories of vehicle skip the test entirely. At the old end, any vehicle model year 1966 or older is exempt. At the new end, the newest vehicles are exempt for their first five years of registration, which is why only cars more than five years old are tested. Fully electric vehicles are exempt regardless of age. Hybrids, flex-fuel (E85), and alternative-fuel vehicles are not exempt, because they still burn fuel. Here is the quick reference:

A few situational exemptions are worth knowing. A vehicle registered at a ZIP code outside Area A and Area B does not need an Arizona test at all. If your car is physically out of state for at least 90 days before your registration expires, you can apply online for an out-of-state exemption for a $9.50 fee; active-duty military stationed outside Arizona with the vehicle not in use have a related exemption. If you buy a used car from a private seller who already had it tested, that passing result transfers to you; if the seller never tested it, the test falls to you before you can register.

Because the five-year window is based on registration dates rather than a clean calendar line, the single most reliable source for your specific car is your MVD registration renewal notice, which states whether a test is due and which type. For edge addresses near the Area A boundary, use ADEQ's ZIP code look-up. Fees, cutoffs, and repair limits are set by ADEQ and can change; every figure on this page was verified against ADEQ's program pages on November 7, 2026, but confirm the current rules at azdeq.gov or on your renewal notice before you rely on them. This page is general information, not legal advice.