dose any one kno what these modes are used for

 

Sport economy and winter
Winter start the car off in 3rd gear for winter conditions.
Sport shifts quicker

 

do you kno if the sport mode has any effect on gas?

 

A very little bit.
I am testing right now with my R.

 

Economy, which is the E will get you slightly better gas mileage. But then a lighter foot will do the same thing.

 

Not that I would ever argue with you, but doesnt Sport make the car shift in the 5-6k rpm range, making it shift later? rather than quicker? My "E" mode shifts in the 2-3k rpm range.

 

I think Tech meant that the engagements are quicker between shifts. Its a firmer shift with less slippage. But yeah, what you said is correct too.

 

Sorry but yes thats what I meant.

 

question, if I drive more sport like, would putting the car into sport mode save gas at all? I figured not since higher rpms usually means more burned gas.

 

Sport mode will not save gas. Lighter foot will[8D]

 

Kinda hard to have a light foot when it takes a fair amount to get the car rolling. If I drive with a light foot the car takes forever to get up to 30.

 

Not mine.
Maybe something wrong?

 

most likely, im going to go take a look at the car now.

 

To add a little to this.

Im from michigan and we got hit with about a foot of snow yesturday morning. I put the "W" winter mode on. Its awesome in the snow. didnt get stuck at all and keeps the car from spinning the tired too much.

Just a quick fyi