How to Reduce the Cost of an Audi Replacement Key If you own an Audi key to your car is something that you never want to lose. But a new key can aid in getting back on the road quickly. A brand new Audi key costs between $280 to $475. https://carlocksmith61364.ivasdesign.com/51904373/the-15-things-your-boss-wants-you-to-know-about-audi-a4-car-key-replacement-you-d-known-about-audi-a4-car-key-replacement