Originally Posted by I35it
I test drove both hard and I love that "raw" feel to the M3 but after driving that s4 I don't know anymore. I want the M3 souly because maintains on it seems much simpler then the S4. Either way, thanks for the help.
The maintenance/upkeep between the two would be similar. It should come down to which one better fits your driving style and DD requirement(s).