But many options like:

Sirius, Aux Input, Bluetooth, etc..

Can be retrofitted in 01+ X5's. I had that same battle between 02/03.......also 4/50,000 mile maintenance kicked in 2003...2002 models only have 3/36,000 mile maintenance(can be extended for 12XX dollars but you have to be within the covered mileage/year.

I ended up with an 02...and installed all the latest toys.....

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2011 X5D
2007 M5