Everybody wants clean air. Most everybody wants to drive. When you drive a vehicle with a internal combustion engine that engine omits harmful pollutants to the air. Vehicle manufacturers design their power train control systems to lower these harmful emissions and provide good drivability. A smog test verifies the function of these systems.
Castner’s Auto is now A STAR certified Smog Test and Repair Station. I’ll update this page soon but in short the STAR program is what the Test Only/Gold Shield programs have evolved into. Being a STAR station means you can test any vehicle that needs to be tested. If you happen to have a DMV renewal that says Test Only on it that vehicle can also be tested at a STAR station.