[Christien]

Originally Posted by kaisen

More powerful, yes!

More fuel efficient?!? No way. Once they went direct injection with variable nozzle turbos, they were as efficient as they've been. Esp with the 5 and 6 speed automatics. Now it's all about injecting more fuel to make more power (no way around that) so the injectors are a little less efficient now, esp at lower flow rates.

Add the regeneration and other emissions related strains on fuel economy and it's clear that a 2006 diesel pickup will get significantly better fuel economy than a 2013 diesel pickup. They pollute less at some expense in fuel economy, and a huge expense in purchase price.

Really? That's disappointing. Because what that says to me is that a significant portion of vehicular fuel consumption and emissions are due to a bunch of guys trying to prove their manliness. And before anyone jumps all over me pointing out the fact that I drive a very fuel-inefficient and polluting 40 year old car, the big 3 are selling some 2 million trucks a year - that's a lot more F150s that longhoods on the road.