My E300 typically gets 23-26mph. The is a country drive of eight miles to town and a lot of small town driving. This is the car my wife drives and she drives it Very inefficiently. I can always get more or of it.

I have also learned that the state of running AC is more efficient that open windows is not always true. I April I took this car on a 600 mile trip. The first half of the trip I ran the AC an got on 29mpg. On the return trip I shut off the AC and opened the moon roof and two windows part way. I got 35mpg.