As previously posted about BMW has big plans for the M brand, including all wheel drive and diesel.
BMW has confirmed that it will be producing the first diesel vehicle to ever wear the M badge in the company's performance vehicle line. BMW will be producing a diesel-powered M5 next spring that will feature three turbochargers. The same engine will also be used in other BMW vehicles like the X5 and X6 crossovers.
550dM will make "slightly less" power than the gasoline M5's rated 560 HP output with final numbers expected to be in the 500 to 550 HP range. However, the torque output will be massive at up to 650 lb-ft. The copious torque is pointed to as the reason for the all-wheel drive option.
Full story - http://www.dailytech.com/Report+BMW+to+Launch+Diesel+Version+of+M5+Next+Spring/article22477c.htm
The on of the very first M car was a M535i so the naming scheme makes sense but it a tough pill to swallow for the modern M enthusiasts that are use to a few mighty M cars and don't know what to make of this every growing M line.
What do you think? The power and torque are certainly in M territory. Would you rock an oil burner M?