Stay informed with the latest emissions testing news, state law changes, preparation tips, and expert advice. Updated for 2025.
See what changed for emissions testing in 2025. State-by-state updates on Texas inspections, New Hampshire phase-out, Bexar County rules, and what to check before renewal.
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See which U.S. states have no emissions testing requirements in 2025, which recently ended their programs, and which are phasing out smog checks soon.
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Learn how catalytic converter theft affects your emissions test, which replacement cats are legal, and how long to drive before retesting after a converter is replaced.
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Find out what happens when a deleted diesel hits a smog check. Learn about federal anti-tampering laws, how inspectors spot DPF and EGR deletes, and legal alternatives.
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Learn about 2025 diesel emissions regulations, state inspection programs, federal heavy-duty standards, and how to stay compliant. Fleet and owner-operator guide.
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Find out whether emissions testing is based on where you live, work, or register your car. Learn how states handle commuters and what to check before your renewal.
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Find out if hybrids need emissions testing and whether electric cars are exempt from smog checks. State-by-state breakdown of EV and hybrid requirements for 2025.
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Learn how emissions testing evolved from tailpipe sniffers to OBD-II scans. Understand readiness monitors, modern test technology, and what this means for drivers in 2025.
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Find out the best time to schedule your smog check. Learn how seasons, weather, and timing affect emissions test results and station wait times in 2025.
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Texas eliminated safety inspections in 2025, but emissions testing remains in 17 counties. Find out if you still need a smog check for registration renewal.
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Avoid these common smog check mistakes in 2025. Learn why testing with a check engine light, clearing codes, skipping warm-up, and other errors cause emissions test failures.
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