Perhaps, on the other hand driving in sport mode would easily fall under "offensive, sporty driving" which some OE's (ZF specifically) state a shorter ATF change interval.
Originally Posted by IndyIan
I don't even think you could assume that, the trans may actually shift much less since its not going through the upper gears every time you let off the throttle, and then downshifting 3 times next time you touch the gas... Also the crisper shifts may have all the clutches and belts slipping less trying to smooth out the shifts too.
Originally Posted by BMWTurboDzl
You'll have to change the ATF sooner than otherwise and there will be increased wear on the transmission. How much wear is basically impossible to quantify.