From the Costco Auto Program web page, you can browse available vehicles and use the company's research tools to compare vehicles, calculate monthly payments, and read reviews. You can also contact the company's customer service line to have an employee walk you through the process over the phone.If you want a car, you can choose from a variety of classes: sedans, sports cars, SUVs, trucks, crossovers. While you don't learn the discounted price until you visit the dealer (this is an old sales trick – potential customers are less likely to walk away without buying if a salesperson is able to talk with them about their hesitations face-to-face), the MSRP on the available vehicles ranges from under $20,000 to over $150,000. You can also buy or lease a motorcycle, RV, ATV, jet ski, snowmobile, or UTV. If you don't want to buy a new vehicle outright, you can also lease a vehicle or select a pre-owned vehicle instead of a new one. A pre-owned vehicle has been used by another owner, but is inspected by the dealer for any broken or worn-down parts, which are fixed before the car is sold again.For many cars, you can select the trim, features, and exterior color you'd like. For other vehicles, you can only choose the model.After you've chosen the vehicle you'd like, you fill out a form with your name, contact information, and Costco membership number. Costco then sends you the contact information for a participating dealership and the designated salesperson you have to work with to get a Costco discount. When giving Costco your information, you also have the option to allow Costco to review your purchase agreement if you end up buying the car to make sure you received the correct price.Once you go the dealership and talk to the designated salesperson, you'll be shown the discounted price for the vehicle you requested. The Costco Auto Program FAQ notes that the dealer may not have the car you requested on the lot, so you may have the option to have the dealer buy the car from another dealership or order one directly from the manufacturer.Once you've reviewed the discounted price, you're able to buy or lease the vehicle, but there's no obligation to do so if you don't like the price or change your mind. You also have the option of trading in your current vehicle.