For me that's a frustrating dichotomy. I'd love the MPG of a Japanese car, but without the boring styling. OTOH the Pontiac Solstice and the Chrysler 300 do it for me style-wise, but with mediocre mileage.
Sad truth is you might as well get the Solstice GXP( Sky Redline for me) over the regular one if you're concerned about fuel economy. 20/28 for the regular one with a stick. 22/31 GXP with a stick. It is using the 2007 EPA testing.