I feel most people here know A LOT more about WRX's than me, but I have yet to see of any problems with people not breaking in their engines, and problems that can be specifically traced to not breaking in an engine. I broke mine in as suggested, but I find it hard to believe that my car would be much different if I drove it harder. Where is the list of people, or long threads discussing problems with WRX's that haven't been broken in? Perhaps I am wrong, (i'm not knowledgeable enough to know), but I haven't seen to many people talk about cars that have been screwed up due to "impropper" break-in. I bet a high percentage of WRX's owners could not resist the tempation, and drove their car hard from day one. If I am wrong, and there is a large group that have damaged their vehicles, then I eat these words.