What is CDW and SLI? 🎥 Michelle Osgood 26 October 2018 15:10 Updated Follow Related articles What is CDW? What is the difference between Worldwide and Worldwide+? My credit card has travel insurance including Collision Damage Waiver (CDW)? I have not taken out CDW with my car rental firm so if I have an accident I am responsible for the full value of the car. Is this covered by the ReduceMyExcess policy? Can you cover courtesy cars or car club cars? Comments 0 comments Please sign in to leave a comment.