Vehicle inspections in the United States fall into two categories: safety inspections (checking brakes, lights, tires, steering) and emissions inspections (testing tailpipe pollutants). Requirements vary dramatically by state.
19 steps across 5 sections
1. States Requiring Safety Inspections
- Annual safety inspections: Virginia, West Virginia, Pennsylvania, New York, Missouri, Maine, Louisiana, Delaware, Rhode Island, Vermont (ending Jan 31, 2026 for New Hampshire), Texas, North Carolina, Massachusetts, Maryland
- Biennial: Some states inspect every two years
2. States Requiring Emissions Testing
- Statewide: Connecticut, Delaware, Oregon, and others
- Metro-area only: Texas (17 of 254 counties — Houston, Dallas, Austin, El Paso, and San Antonio metro areas), Georgia (13 metro Atlanta counties), Colorado (Denver metro), Arizona (Phoenix/Tucson), Illinois (Chicago...
- No emissions testing: Alabama, Alaska, Arkansas, Florida, Hawaii, Idaho, Iowa, Kansas, Kentucky, Michigan, Minnesota, Mississippi, Montana, Nebraska, North Dakota, Oklahoma, South Carolina, South Dakota, West Virginia, ...
3. 2026 Changes
- Texas: Bexar County (San Antonio) now requires emissions tests
- North Carolina: Dropping emissions testing in 18 counties (May/June 2026), keeping only Mecklenburg County (Charlotte)
- New Hampshire: Discontinuing yearly safety inspections as of January 31, 2026
4. Safety Inspection
- Brakes (pads, rotors, lines, parking brake)
- Tires (tread depth, condition)
- Lights (headlights, brake lights, turn signals)
- Windshield and wipers
- Steering and suspension
- Horn, mirrors, seat belts
- Exhaust system integrity
5. Emissions Inspection (Smog Check)
- OBD-II test: Plugs into vehicle's onboard diagnostics port (1996+ vehicles) to read stored emissions codes
- Tailpipe test: Measures actual exhaust gases (CO, HC, NOx) — used for older vehicles
- Gas cap test: Checks fuel system for evaporative leaks
- Visual inspection: Checks catalytic converter, EGR valve, and other emissions components are present and unmodified