Hmm really? My Camry made it nearly 10 years, and my Civic still had a good battery 6 years in when I sold it.

Regardless, the battery and DCM were both tested by Subaru. The battery tested bad, and the DCM tested for a high parasitic draw. I drove the car daily, and the battery would die if I didn't drive it for 4 days. I didn't just make this up either, search "DCM parasitic draw" on Google for more. Subaru even sent me a letter outlining my options for repairs.