One problem related to other fuel system tank assembly has been reported for the 2007 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mercury Mountaineer based on all problems reported for the 2007 Mountaineer.
First off when I bought the vehicle the rear wiper does not work. Secondly when you put the vehicle in reverse it jolts before going into reverse. Finally it only let's you put so mich of fuel into the gas tank at a time before stopping the fuel flow into the gas tank.