No car has defined and dominated a segment like the BMW 3-Series. It is the compact sport sedan everyone else has been gunning for since the origin of the line over 30 years ago. So when the 3er is redesigned, as it has been for 2012, everyone wonders: have they once again raised the bar, or have they lost their way, perhaps even choked? An answer, in two parts. First up: a “Luxury Line” 328i automatic. Next month: a three-pedal “Sport Line” 335i.