I'm a previous G35 owner and have just purchased '11 G37. Two weeks into ownership I've notice significant harsh downshifts from 2>1. Some delay here and there with taking off from a complete stop and/or quick acceleration. The previous owner hardly drove it. There's only 12,800 miles on her to date. I drove 1999 Honda Prelude for 10yrs (love her...but she needs some tender loving care.) after having to sell my '04 G35. I'm a pretty old school girl as far as knowing about cars so upgrading to a 2011 I'm in car tech shock. Is there anything any of you can tell me about the harsh shifting/delay issue?

 

Ask the mods to move this to tech/engine and transmission. Discussions ongoing.

 

I have a harsh downshift from 3 to 2 also

 

more than likely you need an updated trans software flash. take it in the dealer and have them check the trans and see if it needs the updated software.