Buying a used car can be a stressful experience. After all, your car is one of the biggest purchases you’ll ever make—second only to purchasing a home. The stress level is often compounded by a pushy salesman, doused in cologne, buzzing in your ear. Price haggling and mounds of paperwork can also make you sweat like a summer afternoon in Arizona. Distractions abound, and you can easily forget to check the basics.