The 2012 M5 with a gasoline engine should hit the U.S. market in the spring of 2012.

The BMW M5 will reportedly get a high-powered diesel engine. “BMW will introduce a new high-performance diesel-powered 5-Series model next spring that will expand the German maker’s vaunted M division … with the triple-turbo V-8 oil-burner set to also be used in a variety of other BMW products, likely including its X-series sport-activity vehicles,” The Detriot Bureau, who first broke the news, reports.

According to the publication, the M5 diesel is likely to get an unusual name: the BMW 550dM or 550dxM for the all-wheel drive version. Autoblog suggests a different name: BMW 550d xDrive M.

But no matter what you call it, the M5 diesel will still pack a punch. The automotive press speculates that the M5 diesel’s 3.0-liter, tri-turbo engine will make about 650 pound-feet of torque, but less horsepower than the current M5’s 560 horsepower. Left Lane News says the M5 diesel should hit the 500-horsepower mark.

Needless to say, test drivers are excited about the M5 diesel. “No luxury automaker has managed to successfully create and sell a diesel-powered performance car before, but given recent advancements in the technology, BMW may be looking to start yet another new trend in the luxury market,” writes Left Lane News.

Shopping for a luxury sports car? Check out the U.S. News rankings of this year's best cars. Then, look for a great deal on a new car by checking out this month’s best car deals. Also, be sure to follow us on Twitter.