What could indicate a vehicle's exhaust system is defective during an inspection?

The indication of visible holes or leaks in the exhaust pipes is a clear sign of a defective exhaust system. During a vehicle inspection, the integrity of the exhaust components is crucial for ensuring proper functionality and safety. Any visible damage, such as holes or leaks, can lead to increased emissions, insufficient exhaust flow, and potential exhaust fumes entering the vehicle's cabin.

Identifying these issues allows for timely repairs, which can mitigate environmental concerns and enhance the performance of the vehicle. Defective exhaust systems can also lead to safety hazards, including exposure to harmful gases for the occupants and others on the road. Therefore, inspecting for physical deterioration, such as holes or leaks, is a fundamental part of assessing an exhaust system's condition.