Hey there, just bought a 2013 Plasma Blue WRX. It's my first time owning a Subaru and my first sports car. I'm very impressed with this car to say the least. I went from an old 138 HP car that ran bad to this. The only thing I have noticed about this car is that sometimes the idle is a little choppy. I assume this is normal? Most 4 cylinder engines I've owned have done this to some extent.