9th: 2008 Porsche Boxster – $45,800 base price

Porsche's Boxster and Cayman have a common platform, yet the Boxster costs a little less, landing it higher on our list here. Both cars offer up a great driving experience, and thanks to the thrifty 2.7-liter flat-6 engine in both, they get good gas mileage out of each gallon of premium fuel. Take your pick: wind-in-the-hair fun, or the snarky good looks of the Cayman. Either way, it's pure Porsche.

Annual Fuel Cost
$2,825
City/Highway/Combined
20 mpg /29 mpg /23 mpg (with five-speed manual transmission)
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