My Z4 does not have iDrive. I just took it in for warranty work and had a loaner X5 with iDrive. It was nice, but not really worth the money, but I don't use the nav other than rare ocassions. I find my iPhone works just as well when I am traveling for nav although a little more cumbersome to operate.
I have Nav in my land cruiser and I keep it off all the time.
For me, if I was a person that use nav all the time or at least most, then iDrive would be worth it. If you don't see yourself really using the nav then I would pass.
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2019 Z4 sDrive30i, 1973 FJ40 Land Cruiser, 2014 URJ Land Cruiser and 2016 Kimberley Kamper
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