How often must a vehicle be inspected in the US?

It depends on the state. New York requires a safety inspection every 12 months and on transfer of ownership; California requires a Smog Check every other year at registration renewal; Texas has dropped the safety inspection for non-commercial vehicles since 1 January 2025 but still requires emissions inspections in 17 counties.

Which vehicles are exempt from emissions testing?

Exemptions are set by each state. New York exempts, among others, motorcycles, vehicles less than two or more than 25 model years old and electric vehicles. California exempts gasoline vehicles of model year 1975 and older, diesel vehicles of 1997 and older, and at registration renewal gasoline vehicles eight model years and newer.

What must the test report show?

In a state emissions program under the Clean Air Act, the owner receives a record of results with the vehicle description, date and time of the test, the station and tester, the tests performed, the standards and the results, and for a failed vehicle information on possible causes (40 CFR 51.358(a)(3)).

Does this cover trucks and buses?

Commercial motor vehicles in interstate commerce have a separate federal annual inspection requirement; see the DOT annual inspection guide. State programs may also inspect commercial vehicles, as Texas does.

US · Expiry & renewal tracking

Keep every vehicle's state inspection or emissions test on time

Periodic safety inspections and emissions tests for ordinary US vehicles are set by each state: New York requires a safety inspection every 12 months, California a Smog Check every other year, and Texas only emissions inspections in 17 counties since 2025. A missed inspection can block registration renewal.

There is no single federal inspection for ordinary cars and light trucks in the United States. Each state decides whether it requires a periodic safety inspection, an emissions test, both or neither, how often, and for which vehicles and counties. Where a state runs an emissions inspection and maintenance program under the Clean Air Act, federal rules set what the test record given to the owner must contain, including the vehicle description, the date and time of the test and the results (40 CFR 51.358(a)(3)).

Examples from official state pages: New York requires a safety inspection every 12 months and whenever ownership is transferred; the inspection expires on the last day of the month punched on the sticker, and most inspections include an onboard diagnostic (OBDII) emissions check, with exemptions for motorcycles, vehicles less than two or more than 25 model years old, electric vehicles and some diesel and heavy vehicles. California requires a Smog Check every other year to renew the registration for most gasoline, hybrid and alternative-fuel vehicles of model year 1976 and newer and diesel vehicles of model year 1998 and newer; gasoline vehicles eight model years and newer are not tested at renewal and pay a smog abatement fee instead. In Texas, since 1 January 2025 non-commercial vehicles no longer need a safety inspection before registration, but vehicles in 17 listed counties still need a passing emissions inspection, and all commercial vehicles must continue to pass a commercial inspection.

Because the inspection is usually a condition of registration renewal (Texas and California tie it to the renewal; New York will not renew a registration without a DMV record of an inspection within the past 12 months), a missed inspection can also block the registration. Commercial motor vehicles are covered by a separate federal annual inspection rule; see the DOT annual inspection guide.

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At a glance

Set by	Each state; frequency, scope and exemptions differ
New York	Safety inspection every 12 months and on transfer of ownership; expires on the last day of the month on the sticker
California	Smog Check every other year for registration renewal; model-year exemptions apply
Texas	No safety inspection for non-commercial vehicles since 1 January 2025; emissions inspection in 17 counties; commercial vehicles still inspected
Federal test record	Date and time of test, vehicle description, results and other items (40 CFR 51.358(a)(3))
Commercial motor vehicles	Separate federal annual inspection; see the DOT annual inspection guide

The state examples are from the New York DMV, California Bureau of Automotive Repair, California DMV, Texas DMV and Texas DPS pages listed under sources, read on 10 October 2026. Other states have their own programs; check the agency of the state where the vehicle is registered.

Who is responsible?

The registered owner, which for a fleet is the company. The owner must have the vehicle inspected at a licensed station within the state's cycle and keep the sticker or inspection report; the state checks the inspection record when the registration is renewed.

If the deadline passes

An expired inspection can lead to a fine or parking ticket (New York) and blocks registration renewal where the state ties the two together. New York issues a 10-day extension when a vehicle is newly registered after a private sale and allows an out-of-state inspection to run until it expires or for one year after the registration date, whichever comes first.

Newly acquired and relocated vehicles

In New York, a dealer must have the vehicle inspected within 30 days of the sale and before delivery; a vehicle bought privately gets a 10-day inspection extension from the registration date, and an inspection issued to the previous owner is not valid. In California, a vehicle more than four model years old needs a Smog Check on change of ownership, and a dealer-sold vehicle must have passed one within the past two years. In Texas, a new resident has 30 days to register the vehicle, with an emissions inspection first in the listed counties.

Tracking it with ExpirySuite

Add each vehicle and record the inspection or emissions test expiry (for New York, the last day of the month on the sticker; for California, the registration renewal in which the next Smog Check is due), plus the state and county.
Reminders arrive 60, 30, 14, 7 and 1 day before the due date and on the day itself, leaving time for a re-test if the vehicle fails.
Link the inspection to the vehicle's registration record, since the renewal usually depends on it.
Assign a responsible person (for example your fleet or workshop manager) so the right person gets the reminder.
If a date passes, managers get overdue reminders 3, 7 and 14 days later.
Upload the inspection report or sticker receipt through a secure upload link, valid for 14 days; no account is needed.

Frequently asked questions

How often must a vehicle be inspected in the US?: It depends on the state. New York requires a safety inspection every 12 months and on transfer of ownership; California requires a Smog Check every other year at registration renewal; Texas has dropped the safety inspection for non-commercial vehicles since 1 January 2025 but still requires emissions inspections in 17 counties.
Which vehicles are exempt from emissions testing?: Exemptions are set by each state. New York exempts, among others, motorcycles, vehicles less than two or more than 25 model years old and electric vehicles. California exempts gasoline vehicles of model year 1975 and older, diesel vehicles of 1997 and older, and at registration renewal gasoline vehicles eight model years and newer.
What must the test report show?: In a state emissions program under the Clean Air Act, the owner receives a record of results with the vehicle description, date and time of the test, the station and tester, the tests performed, the standards and the results, and for a failed vehicle information on possible causes (40 CFR 51.358(a)(3)).
Does this cover trucks and buses?: Commercial motor vehicles in interstate commerce have a separate federal annual inspection requirement; see the DOT annual inspection guide. State programs may also inspect commercial vehicles, as Texas does.

Sources

Last checked: Oct 10, 2026 · This page summarises official sources for general information and is not legal advice. Check the linked sources for current rules and fees.

Made for state vehicle inspection / emissions test (US)

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Reminders on time

Email alerts at 60, 30, 14, 7 and 1 day before each state vehicle inspection / emissions test (US) expires, plus overdue escalation to managers.

Assign an owner

Give each state vehicle inspection / emissions test (US) an owner and let employees update their own via a secure link — no login needed.