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-   -   Slow shifting in D (auto) (http://www.bimmerfest.com/forums/showthread.php?t=518828)

Bearcat 02-09-2011 11:36 PM

Slow shifting in D (auto)
 
I test drove an X3 28i. It appears that the transmission shifts kind of slow when left in D, kind of unenthusiastic. The downshifts are responsive, but I mean the gears take longer time to engage when upshifting and when there are 8 speeds, I feel more pauses in between the shifts. Do you the new owners feel the same?

AzNMpower32 02-11-2011 04:02 PM

This is normal, as the transmission is trying to smooth shifts as much as possible. When I drove the 35i, it felt the same way, as the X3 glides from gear-to-gear. Nice for day-to-day driving.

The transmission is adaptive. If you start accelerating hard, braking hard, and cornering faster, the transmission will hold gears longer and shift crisper/faster. Sport mode (bumping the shift lever left) accomplishes the same, except even moreso. At a certain point, it will maximise performance by holding gears to redline even if you let off the throttle, downshifting under braking in anticipation of a speedy corner exit, and shifting extremely quickly.

See my earlier post for an acceleration example.


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