Yes, it's only available on the Prius (and on the LS600h L and 2008 HiHy for that matter in NA).

FE depends on how you use the EV button. Use it incorrectly and FE will plummet. Use it wisely and FE will increase oh so slightly (gotta love how the world works... easy to fail, hard to succeed hehe)

Mods: EV mod, VVT-i emblem, sport pedals, OEM cargo mat, JDM Prius interior footwell lighting, Sylvania Silverstars 9003ST, DICE iPod kit, OEM all-weather mats, TomTom ONE v2, LED licence plate lights.