Final answer:
To improve gas mileage, maintain your car, drive efficiently, and reduce unnecessary weight.
Step-by-step explanation:
To improve gas mileage, you can take several steps. First, make sure your car is properly maintained. This includes regularly checking and replacing the air filter, spark plugs, and tires. Additionally, you can take actions like avoiding excessive idling, using cruise control on highways, and reducing the weight in your car by removing unnecessary items. Finally, driving at a steady speed and avoiding aggressive acceleration and braking can also improve fuel efficiency.