How can vehicle owners best prepare for an emissions test?

Performing regular maintenance and checking the OBD (On-Board Diagnostics) system is essential for vehicle owners to prepare adequately for an emissions test. Regular maintenance ensures that the vehicle is running efficiently and meeting emissions standards. This includes checking vital components such as the exhaust system, catalytic converter, and air intake.

The OBD system plays a critical role in monitoring the vehicle's emissions and overall performance. If the OBD system is functioning correctly without trouble codes, it indicates that the vehicle is likely to pass the emissions test. Addressing any issues flagged by the OBD system can significantly reduce the chances of failing the test.

In contrast, driving the vehicle for hours before testing may not necessarily prepare the vehicle better, and keeping the fuel tank nearly empty is not beneficial for emissions performance. Skipping all regular maintenance can lead to increased emissions and mechanical issues, ultimately resulting in a failed test.