I think the point has been missed. Let's say I'm going to stop in 500 ft, and I'm going say 45 (this is for example, please no speed/distance calculations :P). In my previous car I could take my foot off and cost there with out dropping much speed. Never felt it downshift while coasting. With the X, it drops a gear slowing me down faster making have to hit the gas at 300 ft. in order to make it.

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2008 X5 3.0
2004 Z4 3.0