Ah, good to know. You do get an extra cog in the transmission though. Makes a huge difference to fuel economy, not that these trucks are known for fuel efficiency... but every little bit helps. Helps add 100 miles to highway range.

Since you like the M62... I'd try to find a 4.6is if you can OP. Not too big a price difference, but you get more power, more options usually, and will hold it's value a little bit better.

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)