We have a 2012 2.5L Outback. It has 100K miles. The other day my husband was driving it up a long hill and it started running really bad like it was only running on 3 cylinders and then it died. We had it towed to our house and my son checked the codes which along with misfire codes for all 4 cylinders it also had PO073 and PO50A. It does start but you can tell that it is not right. We changed the battery because it is 6 years old and the spark plugs. I am having it towed to Subaru tomorrow. Anyone have a similar experience?