When I was 10, my dad set me and a go-kart loose in an abandoned parking lot, free to zip around the blacktop. At that age, you don't give a thought to how much gas costs; it's all about the fun. At this age, however, fuel economy is a big consideration when it comes to buying a car, but it doesn't have to trump the fun-to-drive factor.
There are plenty of cars that offer both fun and fuel savings, from affordable subcompacts and gas-electric hybrids to pricier luxury cars and diesel-powered vehicles. To qualify for this list, a car has to have an EPA combined rating of 30 mpg, while bringing out the inner go-kart-loving kid in all of us: