Correct answer
To clean the air that mixes with the fuel.
To retain particles and impurities in air entering the engine and protect its components. It differs from the cabin filter, which filters ventilation or climate-control air for occupants. This question concerns the engine intake filter, not every component called an air filter. Inspect and replace according to maintenance instructions.
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To clean the air that mixes with the fuel.
To clean the air from the heating system.
To clean the air that cools the engine.
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