i'm pretty lucky to get to drive a few "sport cars" before and i must say, they are a gas drinking machine. Evo 7 is like 320km while cruising but while on controlled road, it only manage to run like 250 to 280km. 2004 wrx is almost the same as the evo. 1997 suzuki 1.3 gti is like only 380km cruising and controlled road will be like 300 to 320km.
Latio is not a bad choice. get to drive it in Japan for three mnoths while i was working in japan. 42l tank can run like 500 to 580 before the gas light lights up. i did manage to hit 160km/h on tomei express and i manage to make a round trip with the tank full to and from tokyo. fyi tokyo disneyland is about 300km away from kakegawa, the city where i live.