Originally Posted by cmk227
I say just keep the 2011. It new, reliable and will have a bit more room in the back. The P is a nice car but if you need to get ride of one I would keep the M. Just my 2 cents. Good luck.
Thanks for your thoughts but keep in mind that the porsche is a cpo and is under full warranty until 2015 a couple months more than my m3. Plus i have researched and apparently the 997s are pretty reliable cars.