Which one is better Infiniti G37 coupe sport or BMW 328i coupe?

No question the G37 is better then the 328i is virtually every way. The G37 really competes with the 335 coupe anyway, but regardless the G37 handles better, is better looking, costs less to maintain and will be more reliable. The BMW gets slightly better mpg, but is also smaller then the G37 for the same amount of money. Now, for a few thousand more then the G37 you could get a 335 coupe that is pretty close in performance and value.