How to Get a Replacement Audi A4 Spare Key We've lost our car keys. Vehicle keys regardless of how sturdy and advanced they may appear, are composed of plastic and metal that can break at any time. Finding a replacement key for your Audi is a costly and frustrating process. https://car-locksmiths44908.webbuzzfeed.com/30348423/a-audi-advanced-key-success-story-you-ll-never-remember