Originally Posted by Lethaldosage423
i know in 2011-2012 they were 412hp and 2013 to 14 they are 420hp. i don't remember off the top of my head what the specifics are
I'm not sure those numbers are anything but marketing. My 2011 (stock) put down 389 to the wheels.. same day a few 13's were putting down 370s. Out of the 2011-13's that ran that day, I put down the best numbers.. despite everyone having CAI+Tunes and mine was stock. There is probably more variability in these cars than people realize. If there is a HP difference, it would be due to tuning from the factory, not hardware.
As far as improvements.. it is really hard to tell. The auto trans is said to be rock solid.. so I wouldnt worry too much about that. There is a difference in oil management beginning in '13.. but that also remains a big mystery.
If you are looking auto, I don't think you can really go wrong as long as you find a low milage car that hasn't been beat on or modified... which is always the trick
My 11 isnt babied and still feels new after 45,000 miles.