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      03-12-2007, 11:31 PM   #5
GregW / Oregon

Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

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DSG & coasting

Originally Posted by skierman64 View Post
I highly doubt BMW would design the DSG tranny to disengage when coasting. They don't even do that in their automatic transmissions, conversly most GM auto transmissions do allow the engine to drop to idle when coasting (a feature I hate). I personnal want the transmission to stay engaged when coasting to take advantage of engine braking the same way it does in the current SMG tranny.
I agree--compression braking is a highly desireable feature that aids car control. Also, when coasting an engine is still using fuel, but when decellerating with no throttle the fuel is cut off. BMW will not use a coasting mode unless you shift into neutral.