BMW has finally released details on its new 2.0-liter 4-cylinder engine slated to appear in many North American models, starting next year. Code-named N20, it's actually an indirect replacement for the least powerful version of the luxury automaker's classic 3.0-liter inline six-cylinder gasoline engine.

Reportedly running a twin-scroll turbocharger together with BMW's patented variable valve timing and variable camshaft-control systems, the new 1,997-cc unit produces 245 horsepower (hp) at 5,000 rpm. This represents an additional 74 hp compared to the most powerful version of BMW's existing naturally aspirated 2.0-liter four-cylinder. In addition, the new N20 pumps out an impressive 258 pound-feet of torque at just 1,250 rpm. The last time BMW offered four-cylinder engines in its U.S. models was over 10 years ago.

As of now, the first BMW to get the new N20 is the BMW X1 xDrive28i - a reworked range-topping version of BMW's entry-level off-roader. This will result in 12 hp less than the current X1 xDrive28i's naturally aspirated engine. However, it will also result in 29 more pound-feet of torque and is capable of propelling the new four-cylinder model from 0-62 mph in just 6.1 seconds and top speeds of 149 mph with a standard six-speed manual. That's an improvement of .7 seconds and 6 mph respectively.

Stay tuned for more news on BMW innovations. Bert Smith BMW in Saint Petersburg, FL is dedicated to keeping you informed.

  [INFO]   http://www.autoweek.com/article/20110306/GENEVA/110119882