Anybody can beat the EPA using a light foot & keeping speeds down. But you were talking about taking a 30-35 mpg car & getting 40 mpg out of it. The Mazda 5 is a 27-28 mpg (hwy) car similar to my SE-R, so 37-38 mpg is the best you can expect consistently on hwy trips. I don't think there are any 6 passenger vehicles rated 30-35 mpg hwy. The Prius-V should do it, but it's not out yet.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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