What determines if a vehicle passes the Smog Check?

The vehicle's emissions output being within the regulated standards is the critical determining factor for passing a Smog Check. This check measures the concentration of pollutants released by the vehicle's exhaust system and compares these emissions against state and federal guidelines. Each vehicle is subject to specific emission standards based on factors such as its make, model, and year of manufacture.

If the emissions exceed the allowable limits, the vehicle will fail the Smog Check, regardless of its age, mechanical condition, or purchase price. These regulated standards are established to ensure that vehicles do not contribute excessive pollutants to the environment, helping to maintain air quality and public health. The focus on emissions levels highlights the importance of monitoring and controlling environmental impact from motor vehicles.