Same problem with my 2013 RAV4 GX Diesel (2012 built), low oil warning at 18,000kms, at 20,000kms service was told "not to worry". Low oil warning again at 24,000kms, took it back to the dealer for oil consumption test, received an email a couple of days later just saying parts were ordered and they will be in touch. Told the dealer I am not prepared to be part of an experimental exercise by Toyota Australia attempting to fix the problem, I want a new car or money back. I am awaiting their resonse.