Yes, the air intake system can have an effect on fuel consumption. The airbox is an important part of the air intake system, which is responsible for supplying the engine with the necessary amount of air for efficient combustion. A clogged or dirty airbox filter can restrict the airflow, making it harder for the engine to breathe, which in turn can cause the engine to burn more fuel to compensate for the reduced efficiency. On the other hand, a clean and properly functioning airbox filter can improve the engine's efficiency and thereby reduce fuel consumption. Therefore, it is recommended to regularly check and replace the air filter on your car to ensure optimal performance and fuel efficiency.