svtec

Surprised to get gas last night and the difference between premium and regular was .25c/gal.

usually it’s 40c-50c/gal

ChpEng

iTrader: (1)

Question for long-term owners: anyone notice a difference in fuel economy in Normal vs Sport modes, for equivalent driving scenarios?

Jwconeil

I never pay attention in my ISF because it’s mostly just a fun car, but oddly, my is350 gets a little better fuel economy in sport mode. Go figure.

93MSB

iTrader: (8)

I notice a slight mpg increase with snow mode. That is probably simply due to my brain/foot not being used to the throttle remapping and therefore the throttle doesn't open up as much

bakalag

I look but don't care either, I think 16 MPG for IS350 and 14 for ISF, both fun miles lol.. I haven't had a long commute in a while, I think 27-28 mpg freeway for the IS350 always in PWR mode. I need to drive the IS F for a long trip one day...

lobuxracer

iTrader: (2)

I've done LOTS of long trips in the IS F getting 28.x mpg regardless of sport mode.

bakalag

I've experienced the same driving someone else's F on a long trip, like 28 also, havent experienced it in mine quite yet