The vehicle’s original window sticker is the best place to find options information. Unfortunately, few people actually hang onto the sticker. Without it, your best bet is to sit in your car and make a note of its options. If you’re using a smartphone, tablet or laptop (assuming you’re within Wi-Fi range), you can complete the options check from the driver’s seat. Otherwise, print out the options page from the Edmunds website and check off the items as you sit in your car, and then enter the information online. It is crucial to get the style and options right. Without them, you may be under- or overvaluing your car.