Emissions testing costs and requirements vary wildly by state. Some states do not test at all. Others charge $10. A few private-shop states run $50-$80. Here is what to expect.
Most states give one free retest within 30-60 days if you fail. Use that window wisely - clearing codes right before retest will fail you for readiness.
Illinois, Maryland, Ohio, and several others run state-owned inspection lanes that are free or very low cost. Easiest and cheapest option where available.
California ($30-$80), Texas ($11.50-$40 plus state fees), Pennsylvania ($35-$55), Virginia ($28). Costs vary by shop and what type of test.
Newer cars (1996+) usually get a quick OBD-II scan. Older cars in some areas get a tailpipe sniff test that takes longer and may cost more.
Diesels in some states (CA, CO, NY metro, etc.) require specific testing for opacity and DPF function. Often $40-$100 for diesel-specific tests.
About a third of US states do not require emissions testing at all - typically rural states with low population density. Check your state DMV.
| What You Notice | Likely Diagnostic Step |
|---|---|
| California | $30-$80 every 2 years (gas), every year for diesel |
| Texas | $11.50-$40, annually with safety |
| New York | $11-$27 with safety, annually |
| Florida, Kentucky, others | No emissions testing required |
| Illinois | Free state-run, every 2 years |
Worried your car will fail? Tell us your symptoms and codes - we will tell you what to fix before testing so you do not waste the test fee.
Get My AI Repair Report →$5.99 - much cheaper than a failed test plus the right repair.
Anywhere from free to $80+ depending on state. State-run lanes (IL, MD, OH) are free or near-free. Private-shop states (CA, PA, VA) charge $20-$80.
About 33 US states, mostly in metro areas. CA, NY metro, NJ, PA, MD, DC, VA, NC metro, GA Atlanta, IL Chicago, OH, IN, WI Milwaukee, NV Vegas/Reno, UT Salt Lake/Provo, CO Denver, AZ Phoenix/Tucson, WA Seattle area, OR. Check your state DMV.
Most states require every 1-2 years, often tied to registration renewal. Some states exempt new cars for 4-6 years.
In most states, yes - one free retest within 30-60 days of failure if done at the same station. Confirm with your state DMV.
OBD-II scan tests take 5-15 minutes. Tailpipe sniff tests take 15-30 minutes. Total visit usually 30 minutes including waiting.
FL, KY, MI, MN, IA, NE, ND, SD, MT, WY, MS, AL, AR, OK, KS, HI, AK, and most of WV, TN, SC. Some have local-area requirements only.