Four problems related to engine burning oil have been reported for the 2011 Toyota Prius. The most recently reported issues are listed below.
Excessive oil consumption of approximately 1 quart per 1,000 miles as of may 2019. Toyota agreed to do a oil consumption test in July 2017 but determined that 1 quart per 1,200 miles was within normal range. Consumption problem has gotten worse and will probably result in having the engine block replaced with a used one at a cost of approximately $5,000.
Excessive engine oil consumption - 1qt every 2,000 miles.
Excessive oil consumption. Recently I notice oil pressure low light lights frequently. It used the oil was changed every time the maintenance light come up. About every 5000 miles. Now the low oil pressure comes almost every 1000 miles. The car only has 89k miles.
Request help with 2011 Toyota Prius oil consumption, quality, safety, & air pollution issues: I bought the car new. Just after 100,000 miles I noticed it was using oil between oil changes. It has gotten way worse to now at 145,000 miles it used 3 qts in 2000 miles. It does not warn you that the oil level is low until you are 3. 5 qts low & a messages says you have low oil pressure. This is unsafe in that the car could go dry on oil and the engine sieze up. There is a TSB on this for other Toyota vehicles, but not yet Prius. I believe Prius needs to be added to the list & I want Toyota to replace my engine or at least the piston rings. So far Toyota is not admitting to oil consumption problems with the Prius. This is also a possible emissions issue. I contacted Toyota's customer experience center in Feb 2016 and they set-up case no. 1602170764 to track my complaint. They referred me to alamo Toyota in san antonio. I do not believe that Toyota is being proactive in addressing this problem. After researching this issue on line, I have found many other Toyota Prius owners with the same problem. The problem does not show up until you are close to the 80,000-100,000 miles point and so for those folks that drive less, the problem may not show up for another couple of years. I thank you in advance for any help that you can provide to me. I spent over $23,000 for this car and hoped it would give me trouble-free transportation for more than 4 years and 100,000 miles.