Make note of the promotional code on your coupon.
Navigate to Hotwire.com.
Click on the "Cars" button.
Enter the pickup location of your car rental.
Selected the desired pickup and drop-off dates of the rental.
Click "Find a Car."
Browse through the returned results and choose a car type, size and price.
Review your selection and click "Continue."
Sign in to your Hotwire account or complete your transaction as a "Guest."
Enter your vehicle driver information and click "Continue."
Select the insurance package desired and click "Continue."
Enter your credit card or PayPal account information.
Accept the Terms of Use clause and click "Book Trip."
Enter your promotion code in the field marked Coupon or Promotional Code.
Present your coupon at the car rental counter when you return the vehicle.