New Rumors Surface about 4-Cylinder Turbocharged BMW Engine, this time for Z4 Roadster

Last time we reported about BMW's long-rumored family of turbocharged 4-cylinder engines, it was in the summer of 2010. Meanwhile, the German manufacturer hasn't revealed anything on the matter, giving the whole affair an almost mythical status. However, a new rumor has surfaced, with Automobile Magazine tweeting that the entry level BMW Z4 will soon get a new, 4-cylinder force inducted engine,