Between Intelligent/Sport/Sport Sharp modes, the manual itself has some pretty short and vague explanations for each.. I havent been able to come across any clear explanations. I guess I'm looking for a more technical breakdown of the three that includes changes in average MPG, gear ratios, etc. I'm assuming Intelligent gives you the most efficiency? What am I losing/gaining between all three? Subuaru's site mentions Sport to be "the best setting for all-around driving because it keeps the engine and transmission in their most efficient settings in normal circumstances" whatever that means.