[MetroMPG]

Your ability to hit 40 mpg depends a lot on your typical driving environment.

Do you mostly drive highway or city?

If it's mostly highway, you can hit 40 by choosing secondary routes and keeping your speed moderate. Best highway fuel economy happens when the highest gear engages with the torque converter locked - typically around 40-45 mph. Refer to the speed vs. MPG link that Daox posted.

Welcome to the forum!