The bottom line on student debt vs. auto debt
Deciding to pay down your student debt versus auto debt will come down to several factors. One of the biggest is whether you have a private student loan or a federal student loan, which comes with a lot more benefits.
Consider how likely you are to lean on the flexibility of student loans and the added benefit of tax-deductible interest. If those factors aren't worth very much to you in your personal financial situation, it's likely best to pay down the debt with the highest interest rate.
That said, if the interest rates on both loans are extremely low, you may be better off keeping the payments to a minimum and holding cash in a savings account. That could improve your net worth even more than paying down debt.
And if you have a stable career and you're confident you'll pay down the debt over time, you may take some of your savings and invest in stocks for the long run.