It seems like since the beginning of time, Mercedes has offered a diesel option on its sedans to its U.S. customers, but BMW has always avoided putting these loud and relatively sluggish engines in its U.S.-bound cars. According to various reports, this is all due to come to an end in the near future, as BMW is prepping its 3.0-liter diesel power plant for U.S.-bound 7 Series models.
Nothing is definitive yet and we are still in the early phases of all of the speculation and reports, but we anticipate it to bear a 735d or 740d badge. We also do not know if BMW is planning to further tune the current 3.0-liter diesel engine to exceed its current 265 horsepower and 425 pound-feet of torque, but we certainly anticipate the German auto builder to pump up the horsepower to the 300 horsepower range to attract buyers.
As for fuel economy, we can expect the highway economy to jump from the 17 mpg city and 25 mpg highway to roughly 19 mpg city and 29 mpg highway, given the fact that the much heavier and less aerodynamic X5 gets 26 mpg highway with the same diesel engine. This would make the 7 Series one of the most fuel efficient cars in its class, as the automaker strives to stay ahead of the CAFÉ curve.
Reports are pointing toward this new engine arriving in showrooms sometime in late-2013, but don’t be surprised to see it makes its way over here a little earlier. We will continue to monitor the details of this new engine and keep you updated as more information becomes available.