Stretching a loan over more years shrinks the payment but grows the total interest you pay.
Illustration only — example $20,000 loan at 10% APR (annual percentage rate). Not a quoted rate.
Amount borrowed ($20,000) Total interest you pay
Same loan, three terms. The 7-year option saves about $313/month versus the 3-year, but costs you about $4,658 more in interest over the life of the loan. Compare the total, not just the payment.