2015 Ford Mustang EcoBoost 2.3L is a great option if you want the experience of a Mustang but don't want to compromise on fuel efficiency. I have used this for commuting to work an hour each way, and pretty effortlessly averaged 21+ MPG. If I drive it the fun way, it's more like 18 MPG, but if you're doing a lot of freeway driving, you can easily get into the upper 20s. Although it's an automatic transmission, there are paddle shifters you can use if you want some control over which gear you're in. Unlike many sports cars, the Mustang doesn't require premium fuel, so feel free to use regular unleaded, although you will experience the best performance if you use premium.