Which statement is true regarding vehicle maintenance for better gas mileage?

Maintaining tire pressure is crucial for optimizing fuel efficiency. When tires are properly inflated, they reduce rolling resistance, which in turn improves the vehicle's gas mileage. Under-inflated tires can increase fuel consumption significantly, as the engine must work harder to move the vehicle due to increased drag. Additionally, correctly inflated tires enhance overall vehicle handling and safety, contributing to a smoother and more efficient ride. Regularly checking and maintaining the correct tire pressure can therefore lead to substantial savings on fuel costs over time, making it an essential aspect of vehicle maintenance for drivers aiming to enhance their gas mileage.