Vijay

Okay....I know pressing the sport button sharpens the throttle response and changes the exhaust tone. My question is this:

Is there any benefit to having the system off? Does turning it off improve mileage at the expense of a little power, or is it purely just a little dashboard toy and/or sound effect device?

Parikh1234

i think you get better mileage with the sport button on

Bob W.

those are really the only advantages I see to having the button off.

S4 - Aero2

With about 5000 miles on mine, I've noticed about .2 mpg improvement in mileage in "non-S" mode. Certainly NOT a big deal, but I'm convinced that the sharper throttle response of S mode results in a marginal decrease in mileage.

Of course, this thread begs the obvious question - "If you have to ask about mileage, can you really afford the car?"

No insult intended, afterall, I'm the one who knows about a .2 difference...

Silver Fun

I don't know but I think the ECU at cruising speeds (cruise control) meters the minimum fuel to achieve the set speed. With the fly-by-wire throttle the engine efficiency and FSI matches the driving style/demands at least according to owners manual.

ELEVENS

You get less backpressure plus no quickened throttle response to kill your fuel mileage or mess up your shifts. Bonus is great sound.<ul><li><a href="https://forums.audiworld.com/rs4b7/msgs/19561.phtml">Clicky here for howto</a></li></ul>

Bob W.

I don't recall who posted it, but they claimed something like 0.2 or 0.3mpg better in S mode (on the highway, IIRC).

James P.

A 0.2 difference is statistically insignificant...

Silver Fun

Agree. Tire pressure or wind direction will make more difference than that.

James P.

that decreases power &amp; fuel economy, but apparently reduces emissions...