i use redline 5w30 and i average 31 mpg at highways and 23 mpg mix and i am not to conservative .

 

I drive pretty hard, but on the hwy I usually just set cruise @ 80, that's where I get my 30mpg Pretty flat highways around New Mexico and most of our longer trips are to Vegas & back so that's not too hilly either My city driving is really small-town driving so not too much time stuck in traffic, so I usually get in the low 20s in town. When we spend a week in Vegas stop&go driving we get in the high teens.

 

Yawn, who cares about mpg. If people care too much, a Yaris would be an option.

 

I average 20mpg. This is a full mix of city/highway driving. And I wouldn't say I drive slow or easy. Pretty spirited driving.

 

I get 26mpg on the highway (70mph cruise) and like 12mpg in the city (bumper to bumper). Average around 17 which is ok for this kind of a car in a big city.