The Toyota Prius is the answer to the automatic car driver’s dream. This best gas mileage SUV is a wonder for those of us who are looking for an attractive, efficient vehicle that offers roomy space as well as a convenient transmission. This is one of my personal favorites.Those who are a little more environmentally conscious may want to look for the best gas mileage SUV that also offers alternatives to traditional fuel. The Honda Civic Hybrid is perfect. Not only is this vehicle everything you could want in a sport utility vehicle; it is also environmentally conscious with an automatic transmission and would be a great vehicle to use your new hypermiling driving tricks with.