Texas Counties Requiring Emissions Test 2025 Dates. Bexar county will be added to the list of counties requiring emissions tests in 2026. Mechanics at tech one automotive on burnet road in austin said they've been taking calls.
But the law won’t apply to the most populated counties in the state. An emissions test consists of an engine and exhaust check, along with a visual inspection, to measure the amount of pollutants released meet the legal limit set by the state.
