Two problems related to engine oil leaking have been reported for the 2007 Toyota Prius. The most recently reported issues are listed below.
This car leaks oil . I have to put a quart in each time before oil change is due.
Engine oil disappears constantly. There is no apparent leakage of engine oil. Have taken to Toyota dealers during servicing many times since than and mentioned the problem. They couldn't figure out why it is happening. In order to keep engine oil in recommended level I have been pouring recommended grade engine oil (5w30) every other week.