What can be a consequence of a clogged fuel filter?

A clogged fuel filter can lead to engine stalling or poor performance because its primary function is to filter out dirt and contaminants from the fuel before it reaches the engine. When the fuel filter becomes clogged, it restricts the flow of fuel to the engine. This reduced fuel flow can make it difficult for the engine to receive the necessary amount of fuel to function properly, ultimately causing issues such as stalling, misfiring, and a decrease in overall performance.

In contrast, the other options present scenarios that contradict the effects of a clogged fuel filter. A clogged filter cannot lead to increased fuel economy or better combustion efficiency, as it disrupts the fuel delivery system. Similarly, faster engine acceleration would be hindered, not enhanced, due to the reduced fuel flow caused by the blockage. Thus, the most accurate consequence of a clogged fuel filter is poor performance or stalling of the engine.