Is there any Nissan Folks out there reading these threads? It would be very interesting to get some feedback on this gas mileage issue. I compared my 2002 Xterra XE V6 4x4 automatic to a friend's 4Runner V6 4x4 stick shift and the difference is 10 mpg on the highways: I'm getting a 15 mpg average (odometer reads 4500 mi), he's getting 24-25 mpg (odometer reads 20k mi). The 4Runner is for sure not a smaller truck!
According to the previous replies I understand that the best someone got out of the Xterra was 20/21 mpg on highways? That seems to be just acceptable. Wonder why some cars need to cause that much more pollution than others...
Just my $0.02 cents.
-Matthias