For around 15,000, its more of a small car with a big surprise. For what it has to offer and its affordability you cant go wrong. although it does exactly reach the 40 mpg mark as its competitors the price beats all.
Other car makers not being able to live up to their high MPG claims gives the Spark extra points. Some other compacts struggled with good gas mileage numbers, I think the Dodge Dart was one of them.