Newbie With X5 On Order

[BMWX54SFV]

Hi all. First visit to this site.
Should be getting my 2012 X5 SAV Black Saphire on Black Nevada i35d with Dark Walnut wood trim. Never owned a B on B before but had have enough with the light colors with two small grandkids.

SAV is due in about September 4 or 5th. Will be driving it to FL for the winter.

Anyone know what I can TRULY expect in MPG of diesel?

My X5 xDrive35d Selected Options:

Space-saver spare
Running boards
BMW Apps
Cold Weather Package
Retractable headlight washers
Ski bag
Heated Steering Wheel
Heated rear seats
Premium Package
Comfort Access keyless entry
Voice-command
4-zone automatic climate control
Interior mirror with compass
Real Time Traffic Information
Navigation system
Universal garage-door opener
Rear manual side window shades
Rear View Camera with Top View
Online Information Services
Premium Sound Package
Premium hi-fi system
Satellite radio with 1 year subscription

Hope to learn a lot from this site. Thanks in advance