well first off, hooligan is SEMI right. the egr's are a large problem if NOT MAINTAINED!! those engines get a lot of charcoal build up in the intake if not properly driven. ie you drive 2 miles to a destination too often and not let it run fully, or let it idle too long often.) but that can be taken care with semi annually intake cleanings. the EGR coolers them selves also tend to go and put coolant directly into the exhaust, often people think their head gaskets are blown, when in fact they're not. some engines will drop lifters and the needle bearings from the lifters will go into the low pressure oil pump resulting in engine failures. occasional high pressure oiling problems, ie - dummy plugs fail, the pump its self fails, etc. i used to work on those things at a ford dealership.. i can tell you all about them. the turbos have a VGT system that makes the outlet small or larger, sometimes the vanes inside that move freeze up due to charcoaling, but like i said that can be managed. the engines that dont have problems, are baddass engines. theyre super torque'y and have a TON of mods and upgrades available to them. anymore questions? pm for my number if you have any further questions. and just fyi, for what i know about them and all their problems, i would still buy one.