I believe the question was stop lights in cities. Seems hardly worth the effort and extra jolt on CV joints when the car is put back in gear. What happens when people do this is that they sooner or later forget they are in neutral. Car in front leaves, you tap gas, car does not move, you stick it in gear with engine above idle, car lurches ahead, with more wear and tear on tranny than if you left it in gear the entire time.

I have never had tranny problems in any car and have driven well over 1.3M miles. Best preventative procedure is to change tranny fluid and filter as recommended by MB. That said, I wonder about my AMG. There is no 30K recommendation on fluid for it. The only reason I put the selector in neutral is to keep rpm's a little higher for a little more AC cooling when car is stopped.

As for the argument that transmission slips (generating heat) when sitting motionless in drive, there is slippage when you drive it at low speed anyway. I have an AMG that does not slip and it truly does not slip except at idle in gear (obviously). But that is the only car of mine that does not slip. The 400E I traded on the Acura slipped until 2000 rpms whereupon it locked up.

I don't think there is much to be gained unless you have stoplights that remain red a whole lot longer than the ones in my local do.

__________________
Lawrence Coppari

2002 SLK32 AMG
2005 Acura TL
1987 328GTS
1986 944T