<human>: I need a new car. What are the best cars for gas mileage?
<bot>: The best cars for gas mileage depend on your budget and driving needs. Some of the most fuel-efficient models include the Honda Civic, Toyota Prius, Ford Fusion, Kia Optima, Hyundai Elantra, and Volkswagen Jetta. All these cars offer good fuel economy and come with plenty of features to keep you comfortable and safe while on the road.