We have been lucky so far.. 2012 with 115K miles. I last changed the oil at 110K and checked the level as I do when the "Maint. Required" message came a couple weeks ago. It was right in the middle of the two marks on the dip stick. I consider a half a quart every 5K acceptable on a vehicle with over 100K.
I have heard about Prius's having this problem for model years 2010-2012. Not sure what they did in 2013 and beyond but not as many complaints. So those of us here that have the refreshed 2014+ models will have the updated refresh engine that the 2013+ Prius has. My wife loves her CT.. she wasn't fond of her 2010 Prius but it used about the same 16 oz per 5K miles once over the 100K mark.
If you want more information on this issue go to www.priuschat.com and do a search as there are many more Prius's on the road with the same power plant as the CT. Most of them haven't developed this problem until over 150K but there are a few.. many more than we will have here.
I have heard about Prius's having this problem for model years 2010-2012. Not sure what they did in 2013 and beyond but not as many complaints. So those of us here that have the refreshed 2014+ models will have the updated refresh engine that the 2013+ Prius has. My wife loves her CT.. she wasn't fond of her 2010 Prius but it used about the same 16 oz per 5K miles once over the 100K mark.
If you want more information on this issue go to www.priuschat.com and do a search as there are many more Prius's on the road with the same power plant as the CT. Most of them haven't developed this problem until over 150K but there are a few.. many more than we will have here.