[Kaliuzhkin]

My Elise typically gets about 18mpg on premium gas. I'm not happy with that - not because of money but because of responsible use of the resource fuel.

That figure (18mpg) is based on city driving. If I do more highway driving, I can get in the low 20s. The fuel efficiency is definitely determined by rpm. It's lovely to be able to drive in whatever gear I want. Third, Fourth, Fifth or Sixth are all fine for highway driving. However, the fuel efficiency is highest in third, and lowest in sixth.