 After owning small trucks for the past 25 years, this is the first sedan I've purchased in a long time, so I was a little nervous about making the change.  I've had the Mazda 6 GT for about 3 months now and all fears are put aside.  What an enjoyable vehicle to drive!  Great acceleration with a sporty feel.  I love driving in sport mode and it doesn't seem to have a noticeable affect on the mpg.  Mostly city driving so far, and have averaged about 29 mpg which is pretty good.  Absolutely love the interior and the information center is easy to use.  My only complaint is that the rear view mirror with homelink is a bit bulky and limits visibility, but it's not a major concern.  Very stylish exterior.....giving me the odd experience of randomly having four (so far) strangers come up to me to complement the color and styling (I chose the Titanium Flash Mica color which I still haven't figured out what that means -- but for simple minds like mine, it's a cool-looking "brownish" color, and the light interior really complements the darker exterior quite nicely).  I test drove several sedans, and the Mazda 6 really stood and felt more like a luxury car without the luxury price.