What can a driver do to avoid excessive exhaust pollution from their vehicle?

Changing the vehicle's air filters regularly is crucial for maintaining the efficiency of the engine and its emission control systems. Clean air filters ensure that the engine receives an optimal airflow, which is essential for complete combustion of the fuel. Inadequate airflow can lead to incomplete combustion, causing the engine to produce more pollutants in the exhaust.

Additionally, when the filters are clogged, the engine has to work harder, which can lead to increased fuel consumption and further emissions. Therefore, regular maintenance, including changing air filters, directly contributes to reducing the levels of exhaust pollution produced by a vehicle, promoting better air quality and compliance with environmental standards.

While the other choices may seem relevant, they do not have the same direct impact on exhaust emissions. For example, driving with windows down does not directly influence emissions, using premium fuel might not significantly alter pollution levels for many vehicles, and limiting short trips can be beneficial, but it’s not as directly tied to vehicle maintenance and efficiency as changing air filters.