I am actually quite pleased with my xterra's MPG. It is an 2000 model with a manual transmission, completely stock except with 31" all terrain tires and k&n air filter. Using a scanguage and some light hypermiling techniques, I have been able to average 22 mpg to and from work consistently. My commute is hilly and a mix of city / hwy traffic. On a level road going 50-55mph, I have been able to squeeze out 25 mpg. The best I could do in my old F-150 was about 16mpg. I have found that my biggest enemy is speed. This thing winds up to almost 3k rpms at 75mph. Not to mention the poor aerodynamic drag, which increases exponentially with speed.
I think the main advantage is the manual transmission. It provides alot more control of your revs and throttle position. It's really too bad they don't make manuals anymore... if they did I may have to buy a new one. Are you listening, nissan?
Last edited by briants; 04-06-2013 at 10:11 AM.