Not sure 0.1 second and 1mpg qualifies as faster and better mileage. Sounds like the same to me. I sat in the latest 320d and 335d and liked them a lot.On a side note there's a 550i Touring (not tuned engine that sits in the latest M5 if I'm not mistaken) that drives around my neighbourhood every morning when I go to work. The grunt of the V8 is pretty nice. It's got no badge no nothing, just a massive rectangular exhaust on each side. That thing looks like a beast.