/products/manufacturers/superior-sensor-technology/b/blog/posts/the-role-of-pressure-sensors-in-emissions-testingWhat is an Auto Emissions Test? An auto emissions test, also known as a smog test or smog check, measures the pollutants emitted by a vehicle's exhaust system. Testing ensures the vehicle complies with the standards set by the environmental regul...en-USTelligent Community 12