I don't know how far are you in to finalizing this deal, but I wish someone would advice me this before I bought my X (I would have still bought it but have more bargain power):
Order a BlueTooth adapter for Torque app, app itself is like $5 in app store for Android.
You can throw that adapter in to OBD, pair it to your phone and scan errors and do basic check of the car.

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2009 Range Rover Sport SC HST Limited Edition
2014 Infiniti Q50 AWD