One problem related to lose power steering has been reported for the 2012 Subaru Impreza Wrx. The most recently reported issues are listed below.
I had checked my oil about a week prior to this happening. I was out on the interstate on my way to get my oil changed when I heard a loud knocking and lost all power steering and power brakes. Almost caused an accident on the interstate. I had it towed to a mechanic who told me all of my full synthetic oil was gone from the engine and it was blown. There was no smoking no leaking no lights or anything to let me know something was going wrong until it was too late. Subaru has been arguing with me for months and finally said they would cover half of the repairs but I do not feel I am responsible at all. I showed my maintenance records to a Subaru engineer who said it would be no problem getting the engine fixed at no cost to me. Well apparently that decision was reversed by someone and now I only get half of the help they promised me. My engine has been defective from the get go and Subaru needs to own up to it. Should not be replacing that engine at 56k original miles and I have every record showing I took amazing care of that car.