What could a blocked air filter impact?

A blocked air filter can significantly impact engine performance because it restricts the airflow that the engine requires for combustion. An engine relies on a precise mixture of air and fuel to operate efficiently. When the air filter is clogged, it reduces the amount of air entering the engine, leading to a higher fuel-to-air ratio, which can result in poor combustion. This can manifest as a decrease in power, poor acceleration, rough idling, and increased fuel consumption, all of which indicate that the engine is not performing optimally.

On the other hand, transmission fluid levels are related to the transmission system, which is independent of the air filter. Brake efficiency involves the braking system, while suspension stability concerns the vehicle's handling and ride comfort. These systems do not directly rely on the airflow controlled by the air filter, making them less affected by a blocked filter. Thus, the impact of a blocked air filter is most relevant to engine performance.