How Much Does a BMW Key Replacement Cost? BMW offers several alternatives for replacing keys lost however, they all come at costs. Each key is unique to your car's system and can be costly for unauthorised parties to get their hands on. The process can take up to two weeks. https://g28-car-keys26962.verybigblog.com/30197484/what-bmw-car-key-cover-experts-want-you-to-know