Question for the group: How long should I (or anyone) expect to wait for a repair to a car under warranty? Tesla or otherwise, the manufacturer has an obligation to fulfill under the warranty -- how long before I need to take legal action or seek another remedy? I purchased CPO in June 2016. Since then my state of charge calibration has been off significantly (e.g. 80% charge is low-130s, 90% in low-150s). I reported the problem to Tesla in July as I thought maybe there was something wrong with the battery. Good news they claim, not the battery but the SOC calibration for which they will provide a firmware fix... It's been five months since I reported the problem to my local Service Center, but it's out of their hands. So I finally contacted Tesla NA support. Received the same confirmation that the battery is actually charging properly... "There is nothing concerning about the pack beside a slight state of charge calibration issue due to specific usage pattern. The vehicle is charging to 100% as the charge stops by a physical limit of the cell and not a state of charge estimation. The battery is charging to full, however it’s the display that isn’t reflecting it. It will be addressed in a future firmware update once there’s a fix." It's not a problem day to day as I have plenty of range for daily driving. However, I can't make a relatively easy trip of a few hours without unnecessary range anxiety -- and the added headache and inconvenience of charging more frequently than should be expected. Part of me wants them to take the car back and replace with another, similar CPO. What should I do? What would you do?