Here’s how the Tesla referral program works. When you purchase a Tesla, you receive a referral code. Everyone does. You can then extend your referral code to others to encourage them to purchase a Tesla as well. As the owner of the referral code, there are certain benefits to you when someone else uses your code to purchase their vehicle. The programs have time periods and change every so often. Dave used my referral code, and that gave us both 1,500 kms of free Supercharging. Meaning: Tesla Supercharging is the charging network (stations) that Tesla offers its owners on the road.