Hi all. First post. Just got my 15 CT F sport last week and I have a question. Does anyone use Sport mode all of the time? If so, how did that impact your mpg? So far I only use Sport mode when accelerating at an on-ramp or at a bad intersection and just wondering if I shouldn't just leave it on all of the time. If I sacrifice more than 2 or 3 mpg then I don't know if I will. Thanks.