eastcoast 
2010 BMW X5 Diesel xDrive35d 4dr SUV AWD (3.0L 6cyl Turbodiesel 6A)
Will never go back to gas engines
 11,000 miles on a 2010 X5 diesel and I love it. Excellent build quality, performance, comfort, and zero defects. (I'll be first in line for the new X5 4.0d in 2011.) I like the comfort/convenience of an SUV while knowing that clean diesel doesn't pollute like a gas SUV. I looked at the 555hp X5 M, but I can't stomach guzzling gas and polluting like that any more. No tire problems yet. (And yes, whiners in the previous post, your X5 does have a spare tire. Try reading your owner's manual.) I've had 6 X5s since 2001. Although this is the most truck-like vehicle BMW has ever made, it has the best combination of performance, fuel efficiency, low emissions.