The new 2011 BMW 5 Series hasn't even gone on sale yet here in North America but there are now reports that BMW is getting ready to add a diesel engine option. According to Inside Line, BMW will add diesels to two more models. BMW already sells the X5 xDrive35d and 335d here with a 3.0-liter twin-turbocharged inline-six diesel.
The 3.0-liter with 265 horsepower and 425 pound-feet of torque would be ideally suited to the 5 Series and has already been calibrated to pass U.S. 50-state emissions regulations. We drove a previous-generation European-specification 535d two years ago and it was quite the stormer while also getting excellent fuel efficiency. A 535d would go a long way to helping BMW meet the new CAFE regulations.
The second diesel addition could be one of several models. Diesel versions of the 7 Series and X6 both seem unlikely since BMW is already offering hybrid versions of these models. The more likely scenario is the installation of BMW's 2.0-liter inline-four in either the 1 or 3 series. In twin-turbocharged form, this engine produces 204 hp and 295 lb-ft of torque, plenty for either car with combined fuel economy in the 35-40 mpg range.