Your 2011 loaner was most likely built after September 2010 which is when they made some changes which enabled the Apple cable to be used instead of only the Y.
I'd just stick an old ipod in your console with the "Y" and listen to music that way instead of hooking and unhooking your iphone every time you get in your car. So much easier and less frustrating.
'14 528-xdrive - daily driver/winter beater, '06 Boxster - for fun, '07 M6- for even more fun. '16 435 on order