Ford already mfg's the little diesel for Range Rover and RR has already jumped through a bunch of hoops for emissions. The RR's are getting 28 mpg and weight the same as the aluminum f-150's. Speculation is that Ford will tune it for better fuel economy than the Dodge Eco Diesel, so upwards of 30 mpg possibly? Might be cool, other than the DEF and regen crap.
