About 30 states and the District of Columbia require some form of vehicle inspection, and the states that require vehicle inspections fall into three groups: those that check safety only, those that check emissions only, and those that do both. Roughly 20 states require nothing at all for standard passenger cars. The specifics depend heavily on where you live, because some programs run statewide while others apply only in metro-area counties.
States That Require Safety Inspections
Around 15 states currently require periodic safety inspections for passenger vehicles. Most run on an annual cycle; a smaller group tests every two years.
Annual safety inspections are required in:
- Hawaii
- Maine
- Massachusetts
- New Hampshire (inspections were set to end in early 2026 but have been continued by a federal court order)
- New York
- North Carolina
- Pennsylvania
- Vermont
- Virginia
Biennial safety inspections are required in:
- Delaware
- Louisiana
- Mississippi
- Missouri
- Rhode Island
- West Virginia (switched from annual to biennial in 2024)
What the inspector looks at varies by state, but the core list generally covers brakes, tires, steering, suspension, exterior lighting, mirrors, windshield condition, wipers, horn, seat belts, exhaust, and the fuel system. Virginia runs one of the more comprehensive programs, covering more than 20 vehicle systems. Most states send you to a licensed private shop or dealer that the state has authorized to perform inspections.
States That Require Emissions Testing
About 29 states and the District of Columbia require some form of emissions testing. The important wrinkle is that many of those programs apply only in designated counties, not statewide. States concentrate testing in metropolitan areas where traffic and air quality concerns are greatest.
States that run statewide emissions programs include Connecticut, Delaware, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, and Vermont. The rest limit testing to specific counties:
- Arizona tests vehicles in the Phoenix and Tucson metro areas.
- California requires biennial smog checks in 41 of its 58 counties for vehicles more than eight model years old.
- Texas requires emissions tests in 17 counties around Houston, Dallas–Fort Worth, Austin, and El Paso, with Bexar County (San Antonio) scheduled to join on November 1, 2026.
For 1996-and-newer vehicles, the test is usually quick: the inspector plugs into the car’s OBD-II port and reads the computer for emission-related fault codes. If the check-engine light is on, the vehicle fails automatically. Older vehicles may get a tailpipe test or a dynamometer-based test that measures actual exhaust gases under simulated driving. A loose or damaged gas cap can also cause a failure, because the fuel system has to stay sealed.
States With No Statewide Inspection Requirement
Around 20 states impose no statewide periodic safety or emissions inspection for standard passenger vehicles. Those states are:
- Alabama
- Alaska
- Arkansas
- Florida
- Idaho
- Indiana
- Iowa
- Kansas
- Kentucky
- Michigan
- Minnesota
- Montana
- Nebraska
- North Dakota
- Oklahoma
- South Carolina
- South Dakota
- Tennessee
- Wyoming
“No statewide requirement” is not the same as “no inspection of any kind.” A few of these states run limited county-level emissions programs. Ohio tests vehicles in several counties around Cleveland, and Wisconsin requires biennial emissions testing in southeastern counties including Milwaukee and Kenosha. Nearly every state also inspects commercial vehicles, school buses, and sometimes taxis or rideshare vehicles regardless of whether passenger cars are tested. And states routinely require a one-time safety inspection for salvage or rebuilt-title vehicles before they can be re-registered.
Common Exemptions
Even in states with mandatory inspections, not every vehicle is on the standard schedule. The usual exemptions:
- New vehicles. Many states exempt cars for the first several model years. California exempts vehicles eight model years old or newer from its smog check program. Other states use shorter windows of four to six years.
- Antique and classic vehicles. Vehicles beyond a certain age, often 25 years, are frequently exempt from both safety and emissions inspections. Some states require the owner to self-certify that the vehicle meets the safety equipment standards of its original model year.
- Fully electric vehicles. Because EVs produce no tailpipe emissions, they are typically exempt from emissions testing. In states that also require a safety check, EVs still go through that part.
- Diesel vehicles. Some programs test only gasoline vehicles; others include diesels above certain weight thresholds or in specific counties.
Hybrids sometimes follow a different schedule. In at least one state’s program, non-plug-in hybrids get an extended new-vehicle exemption before entering the standard biennial cycle. Plug-in hybrids, because they still have an internal combustion engine, generally follow the same rules as gasoline vehicles.
Recent and Upcoming Changes
The trend over the past decade has been toward fewer mandatory inspections, not more. A few shifts worth knowing about:
Texas Ended Safety Inspections
Texas ended its mandatory safety inspection program for non-commercial vehicles on January 1, 2025. Vehicles registered in the state’s 17 emissions counties still need an annual emissions test, but the broader safety check that once applied to every registered car is gone. Bexar County is scheduled to begin requiring emissions tests on November 1, 2026, bringing the total to 18 emissions counties.
New Hampshire’s Program Is in Limbo
New Hampshire’s legislature voted to end mandatory annual safety inspections effective January 31, 2026. A federal court order kept the program running past that date. The state extended deadlines for vehicles whose inspections were set to expire during the transition. The outcome is still uncertain, and drivers in New Hampshire should check with the Division of Motor Vehicles for the latest guidance.
Other States Considering Changes
Louisiana’s legislature is considering a 2026 bill that would eliminate mandatory inspections for non-commercial passenger vehicles, potentially putting the question to voters. Pennsylvania has an active bill in its House Transportation Committee that would modify the state’s emissions inspection program. Neither has become law. Missouri’s Department of Revenue issued a statement in early 2026 clarifying that its safety inspection requirements remain unchanged despite recurring rumors.
What a Failed Inspection Costs
A failed inspection means you cannot renew your registration until the issues are fixed and the vehicle passes a re-inspection. The inspector will give you a report listing exactly what failed. Most states allow 15 to 30 days to make repairs and return. Many stations offer a free re-inspection if you come back within that window; wait too long or go elsewhere, and you may pay the full fee again.
For emissions failures, some states offer a repair waiver if you spend a certain amount on good-faith repairs and the vehicle still cannot pass. Minimum spending thresholds vary, typically running from $200 to over $700 depending on the state and vehicle type. A waiver lets you register for one cycle while you keep working on the problem; it is not a permanent exemption.
Driving with an expired sticker carries its own penalties. Fines range from $25 to over $100 depending on how long the sticker has been expired, and many states add mandatory surcharges on top of the base fine. In some jurisdictions, a car parked on a public street without a valid sticker can be ticketed.
Inspection fees themselves generally fall between $10 and $50 for safety checks and $10 to $35 for emissions tests, with some metro-area OBD-II tests running higher. A few states cap what stations can charge; others let the market set prices.
Moving to a New State
If you relocate to a state that requires inspections, you will generally need to get your vehicle inspected before you can register it locally. Some states honor an unexpired out-of-state inspection sticker for a limited time, often until it expires or up to one year after your new registration date, whichever comes first. If you are coming from a state that does not issue inspection stickers, expect to get inspected promptly. Many states also require a VIN verification as part of out-of-state registration, which is a quick physical check to confirm the identification number matches the title.
Moving the other way, from an inspection state to one without a requirement, is simpler. You will not need to maintain inspections once you register in the new state, though your existing sticker may stay on the windshield until you swap your plates.