Human: How can I get my car to be more fuel efficient? Assistant: 
You can start by driving more efficiently. Make sure you are accelerating, braking and turning gently. Reduce unnecessary idling and try to keep your vehicle in its most aerodynamic position when possible. You may also want to consider replacing the air filter and spark plugs with high-efficiency models. Finally, you could look into switching to a more fuel-efficient type of gasoline or using an alternative energy source like electric or hybrid power.