on my recent trip to Ireland, my wife and I had planned a travel-the-country itinerary which covered the lower half of the Emerald Island (yes, VERY green there).. With most roads no wider than a standard driveway with walls of trees, shrubs, and ancient walls on either side the smaller the car, the better. Being that there were no Toyotas available from the rental stable (I wanted a car I was familiar with all the controls), at the last minute we upgraded to the new Audi Q3 Turbo direct injected 2.0 diesel with the 6 speed manual. Of course they are right hand drive, drive on the left, and every intersection is a roundabout... no worries I signed up for the full coverage zero deductible 
(concerning TDI coming to the US, I also got some insight from a Toyota exec which I will cover below.)
Now I haven't really had any time behind the wheel of a TDI but was very impressed. the newer technology engine designs really are efficient in squeezing out the power. It had the strong low end pull of the diesel with the long and strong pull up to speed with the turbo. My wife had to snap me out of my rally car driving mentality a few times (bummer)
Unless you are on one of the main motorways, all the other roads are narrow and you have to know exactly where your side mirrors are at all times because there are only inches to spare on both sides. This drew a couple
from my wife on occasion when big busses would come up. Irish drivers were pretty impressive!
The first week of our two week trip was with Toyota so I had a chance to speak with a top exec about the awesomeness of my TDi experience. I asked the question that myself among many others have asked: why not in the US? Evidently it came down to emissions and the CART standards. The diesels put out to out too much NOx
. Even though diesel dominates in Europe, there is even talk that in the large cities diesel will be banned to some extent. This means it goes back to hybrid, new technology super efficient gas engines like the Atkinson design, and the Hydrogen fuel vehicles.
We need a breakthrough in battery technology and/or to build the infrastructure to refill hydrogen vehicles.
(concerning TDI coming to the US, I also got some insight from a Toyota exec which I will cover below.)
Now I haven't really had any time behind the wheel of a TDI but was very impressed. the newer technology engine designs really are efficient in squeezing out the power. It had the strong low end pull of the diesel with the long and strong pull up to speed with the turbo. My wife had to snap me out of my rally car driving mentality a few times (bummer)

Unless you are on one of the main motorways, all the other roads are narrow and you have to know exactly where your side mirrors are at all times because there are only inches to spare on both sides. This drew a couple
The first week of our two week trip was with Toyota so I had a chance to speak with a top exec about the awesomeness of my TDi experience. I asked the question that myself among many others have asked: why not in the US? Evidently it came down to emissions and the CART standards. The diesels put out to out too much NOx
. Even though diesel dominates in Europe, there is even talk that in the large cities diesel will be banned to some extent. This means it goes back to hybrid, new technology super efficient gas engines like the Atkinson design, and the Hydrogen fuel vehicles.We need a breakthrough in battery technology and/or to build the infrastructure to refill hydrogen vehicles.
I kept asking myself if it is so hard to meet NOx emissions why do the German auto makers seem to be the only ones with the magic formula And no one else can pull it off!? They're all over the place!