So I've read through some of the forums looking for informed opinions on correct ways to maximize mpg though proper acceleration and watching speed etc. I've got a fairly long commute (60 miles each way), of which about 60% of it I have only one path option. The other part I've got 2 path options. So maybe you guys can help me make an informed decision. (I know after a few weeks of testing I could probably figure it out experimentally, but would like to avoid that if possible). Route 1: 5.8 miles @ average speed 70mph (interstate, low traffic, virtually no stopping / breaking) + 17.2 miles @ average speed 50 mph on US 1 w/multiple lights 2-3 of miles apart. This route is 23 miles, adds about 8-10 minutes to the overall commute. Route 2: 17.7 miles @ average speed 70 mph (interstate, same as above but I take it farther), + 6.8 miles @ average 40mph (includes about the same amount of lights at closer intervals, a lot more stopping / starting including a quarter mile school zone) Route 2 is 24.5 (1.5 miles longer), shaves 8-10 minutes off the trip. I was thinking Route 2 is the best, even though I originally was thinking Route 1 was the best (due to longer stretch of 'city' driving speed). The 10 minutes time is a nice consideration, but I'm willing to get up slightly earlier to save money in gas. From my basic understanding of the gauges in the car (yay more bars on mpg list = better) I seem to get better instant mpg going on the longer 50 mph stretch, but I'm not sure if its canceled out by the large number of stops paired with need to accelerate back up to 50 mph (in an area that everyone gets mad and honks / swerves if you do it slowly). From you experienced drivers, do you seem to get better mpg out of 70 mph where you can set the cruise and only accelerate / break to get on the road and then off at the exit, or is it worth the stops / starts to do most of the driving at 50 mph?