 My 2006 FORD F150 4X4 4.6 motor was probably the best looking land-boat (break out another thousand) that I ever owned.  I purchased it as a lease return in 2008 with 26,000 miles on the odometer.  Within 30 days the four wheel drive crapped out, costing the dealer $1,800.00 to repair.  At another 30 days the instrument cluster dies and I had to wait two months for a new one.  Three months later the left front vacuum operated locking hub froze and had to be replaced.  Apparently this was a once a year issue for me (owned the truck for 5 years) as water and crud would work its way into the sealed unit.  Then both front window regulators starting squealing so bad everytime the window went up or down, that they were replaced.  Then the posi rear-end stopped being posi and the clutch disks had to be replaced.  Then the real fun started.  At about 120K miles the alternator died on the way to work.  It was replaced but the the truck would engage in four wheel drive all by itself and the alternator would discharge all the way.  I'd have to stop the truck and shut everything off.  Re-start and then wait (usually within minutes) before the whole sequence would start all over again.  Three alternators later.....same thing.  Traded it in on a RAM.