Our Xterra gets 15 MPG city and about 21 MPG highway. At 36060 miles the gas tank level sensor died and I refuse to pay the $450 dollars to a dealership to fix it. The plastic Xterra logo on the rear has fallen off, so I glued it back on. The plastic cover on the windshield wipers has a tendency to come off at a car wash.. beware. The AC has started leaking into the passenger side floor... so gotta fix that now. We've replaced the battery after 28000 miles, and new tires too. Currently the mileage is at 45650 after a recent 2500 mile road trip we made without incident. Overall, its an ok vehicle but lacking in quality parts. The mileage stinks too in my opinion.
Needs improvement to MPG, use better quality parts!