The EPA changed the way it calculates MPG back in 2008 so you can't use 2006 EPA figures for direct comparison. The "new" way of estimating fuel economy lowered the MPG estimates for most vehicles. You're comparing apples to oranges.
Originally Posted by Saintor
And that is the reason why C&D got better mpg figures for a 2006 330i than a 2012+ 328i, which was derated by EPA. The N20 just sucks and doesn't deserve to be in any BMW. I don't care about dyno test; 5-60 is the same/even better on the 330i.
MY2013 328i, N26 / 300 / 4CG / KCDF / 2DW / 205 / ZDH / 302 / 3DZ / 403 / 494