How to Reduce the Cost of an Audi Replacement Key If you own an Audi key to your car is something you never want to lose. But a replacement key can help you get back on the road quickly. A new Audi key will cost between $280 to $475. This https://g2874607.suomiblog.com/audi-a4-car-key-replacement-explained-in-less-than-140-characters-45474970