I test drove a 2012 SRT8 with the automatic transmission and very low mileage (19K km - Canada). Noticed that on the highway (in sport mode) it would not kick down into a lower passing gear when I floored it in auto-shift. I could put it into manual shift and downshift with the paddle just fine. Not familiar with the complete workings on this car and sport mode - is this normal? There was a check engine light on and the dealer is having it looked at - no results yet.