Six Shooter: BMW to bring six-cylinder 6-series to the United States

BMW will bring a six-cylinder version of its elegant 6-series to the U.S. market this fall, a spokesman confirmed on Wednesday.

The German luxury-car maker will sell a version wearing the 640i badge. The car will employ a 3.0-liter twin-scroll, turbocharged six-cylinder powerplant that uses Valvetronic technology.

This mill is code-named N55, and it is rated at 300 hp and 300 lb-ft of torque in the 3-series.

The smaller engine will provide fuel economy and likely will cost less than the superlative 650i, which uses a twin-turbo V8 that pushes out 400 hp and 450 lb-ft of torque.

The 6-series was updated for the 2012 model year.

By Greg Migliore