The Germans from BMW started testing the new M3 (F30), a model scheduled to be introduced in late 2013 and go on sale somewhere in 2014. The spy photographers caught the next-generation M3 sedan during tests on the German roads, also reporting that under the bonnet sits a new tri-turbo unit developed by BMW. The new six-cylinder 3.2-liter engine is rumored to develop somewhere around 450 horsepower.