how long does a smog check take

A smog check typically takes between 15 to 30 minutes to complete. The exact time can vary depending on factors like the type and age of the vehicle, whether the vehicle passes the test on the first try, how busy the smog check station is, and the testing equipment used. For newer vehicles (2000 and newer), it can take around 15 minutes, while older vehicles may take longer—up to about 35 minutes for vehicles 1995 and older. The process generally includes visual and functional inspections of the emissions system, an on- board diagnostic check, and a tailpipe emissions test if applicable. Waiting times at the station can also affect the total duration.