Originally Posted by KJM3
Cant get heated seats on a GT500 (maybe you can on 2012s) and to be honest a 300.00 Garmin is a better NAV than the factory one in the GT500. One cool thing about the NAV in the Mustang is you can get Sirius weather radar and dodge the rainclouds, when it works anyhow. Sports scores are pretty cool too, but the sound system itself isnt that great. The bigger Shaker 1000 with the subwoofer doesnt have NAV.
My M3 was an '08. I'm guessing that they have improved the iDrive since then. In my opinion, the Microsoft Sync system and the NAV is better than what I had in the M3.
You are correct that you can't get the Shaker 1000 and NAV together.