The recall correction rate is around 70% to 75%, so about one out of three is not fixed. It varies depending on how new the vehicle is and how long the company waited before the recall. In your first couple of years, you're well over 90%. If it's a six- or seven-year-old vehicle, and it's in the hands of second or third owners, it could be around 50%.
Evidence of meeting #73 for Transport, Infrastructure and Communities in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was recall.
A recording is available from Parliament.