I thought it was 20, as well. They might have made a few more, but I'm pretty sure they only sold 20. There are rumors floating around that they'll make anywhere between 80 and a few thousand more, but, then again, these are rumors.
Looking for a Used Reventon in your area?
CarGurus has thousands of nationwide listings and the tools to find you a great deal.
Search Lamborghini Reventon Questions
Lamborghini Reventon Experts