I have about 3500 miles on my '05 V6 and am already visiting the shop. When I am in town and begin to accelerate from a traffic stop if I do not step on it I get a hesitation or cutout. It also happens when on highway on ramps if I have to hang aound 40 to 45 mph then quickly get up to 65 to 70 to merge. The dealer in KC i bought it from has supposedly spoken to engineers and rebooted the system??? But this did not help. And much less concerning the 6 disc changer skips or drags every other day or so. Anyone else seeing these issues???

 

there has been a lot of talk about problems with the mach 500 and the hesitation you talked about

here are some more problems that V6ers have had
http://forums.bradbarnett.net/index.php?showtopic=11051