HAPPYCAR is a car rental company with excellent rates on renting cars. With your IxESN Card you get a €10 discount if you have a rental that's more than 75 euros.
Unfortunately the website is only available in Dutch, French, German and Spanish. Contact your local IxESN section if you need help renting a car. The customer service does speak English! Before you rent a car, make sure to read the tips and tricks for renting a car (file is at the bottom of the page). To get your discount use this code: 10UNIhappycar