Smog tests can be conducted at a wide variety of smog check stations. Certain smog check stations, however, have chosen to participate in the BAR's STAR program. A STAR smog station is subject to additional oversight and review by the BAR, and they conduct more strenuous smog testing.

The cost of a STAR smog check is typically higher than that of a regular smog check service. However, there are some benefits to getting a STAR smog check.

Star stations are authorized testing centers that can perform all the tests required to certify your vehicle. There are two types of star smog stations: Test and Repair: these stations can test and repair your vehicle if it doesn't pass the smog test. Test Only: these stations can only test your vehicle.

All this means is that the DMV has chosen your vehicle to be inspected at a STAR certified smog station which is monitored closely by the BAR and must conform to high standards established by the Bureau of Automotive Repairs. Some STAR stations are only authorized to perform smog inspections.