The TurboTax Free edition does not support Form 8936. You will need to upgrade to the Deluxe edition
For an energy-efficient vehicle tax credit
Click on Federal Taxes (Personal using Home & Business)
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Scroll down to Cars and Other Things You Own
On Energy-Efficient Vehicles, click the start or update button
On Energy-Efficient Vehicle Charging Station, click the start or update button
Or enter energy efficient vehicle in the Search box located in the upper right of the program screen. Click on Jump to energy efficient vehicle