depends on how much u drive and how much u owe on the car/truck
with my truck it has been paid off since 2003. and with hypermiling get ~30mpg with my 4x4. so no y trade it.
hell i also have a 09 tacoma 4x4(bout 20mpg, wifes)) and a 07 camry se(mine) and just drive them with no fuel savings in mind.
now if u drove a tahoe got 13-15 mpg, and could get close to even for it then yes if u could stand a smaller car, if not just learn how to drive and enjoy.
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