The new Common Rail diesel here in North America... I will buy one when an original owner gets sick of the maintenance costs and constantly throwing parts at it, probably around a little after 120,000 miles, when the DPF and Nox filters go out of warranty. All the plumbing, and all the sensors to fail on this car are, in my opinion, a Pandora's Box of potential problems and failures. VW of America will make bank on these in service charges and repairs, because they are The Devil to work on... there is waaaaaaaaaay too much plastic under the hood, being exposed to high heat, including the plastic gears that drive the air inlet control to keep the NoX down, which will be very, very expensive FAILS when the gears strip out. There are already some cars with 80 to 100k miles on them and these parts are stripping out/cracking. Plastic near engine heat makes for bad design and short MTBF.
The new CR diesels, IMHO, are going to nickle and dime the owners to death on them, killing any savings on fuel and high MPG.