Thanks for the input so far. He is in the mountains in CO, so that's the reason for AWD. I think there some valid reason to get something like an AWD Element, however they tend to be over the $10k mark for under 100k mile unit.
I didn't realize that they made X5 diesels for the American market back then.
'03 M3, SMG Retired
'07 530XiT, Sapphire/Beige, PP, SP, MOST & PDC. Retired
2009 C2S Cab
2010 4Runner TR
08 Honda Element 4WD
2013 VW Passat tdi