"where do i list buy vehicle as an asset on form 1120s?"
You would enter the vehicle as an asset by clicking the Federal Taxes tab, clicking Deductions, and then clicking the Start button to the right of Assets in the Depreciation of Assets section (see first screenshot).
You would enter the interest paid on the loan by clicking the Federal Taxes tab, clicking Deductions, and then clicking the Start button to the right of Common business expenses in the Business Expenses section (see second screenshot).
You would enter the loan by clicking the Federal Taxes tab, clicking Balance Sheet, and then proceeding through the screens in that section (see third screenshot), specifically as a liability - note payable.
[You are not required to complete the balance sheet if your corporation's total receipts for the tax year were less than $250k and total assets at the end of the year were also less than $250k]
