All I know is the 4 banger makes the 328i faster than with the inline 6, and with better mpg. Sounds like BMW has produced another winner.
They'd better! BMW sinks or swims based on the success of the 3 Series.
2015 Alpine White 228i Coupe with Sport Line, Premium Package, Lighting Package, Driver Assistance Package and Track Handling Package and those wonderful non-runflat Michelin Pilot Super Sport Summer Tires.