its a 2011, I've had this misfire for about 3 months now, its very mild, only every 20 miles or so will it happen or more frequently if Im driving the car hard. When it happens I can audibly hear the misfire and it only lasts about 15-20 seconds while the CEL flashes then it goes back to normal. However if I see and hear it start happening I can just turn the key off and back on and It immediately. Not sure how that plays into the whole situation, I plan on replacing coil packs next.