Well - I have been reading about bad gas mileage and I have to agree. My red 2WD Xterra - the first one ever to come and purchased in Lumberton, NC has never gotten above 16 on a road trip and usually averages 13-14. Well, my son was driving it and it was involved in a front end collision. After $8,500 and over 2 months I finally got it back only to be getting a little over 10 mpg and only getting 200 miles out of a tank full. The repair shop swears the frame is not warped - but I do know they had to replace the first cross member brace under the front of the engine. Does anyone have any ideas why the gas mileage would have gone from bad to down right shitty ??