Does Texas Have Emission Testing 2025 Emissions Test. 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. In order to register your vehicle in 17, soon to be 18, counties in texas, your vehicle must still pass an emissions test.

Cars in some of texas’ larger counties will still be required to have their emission output checked. Instead, vehicles will have to get an emissions.