Well, this is a question completely for you to decode. Most of the car speakers out there are the ones that require you to replace your factory-installed speakers.  But if you are not sure about it, you can either go for advanced stereo systems or smart connectivity speakers. The advanced technology stereo or speakers will let you handle your calls, music and other commands simply voice command or remote. Some of the best ones that you can buy are: BOSS Audio Systems 616UAB Multimedia Car Stereo Echo Dot (3rd Gen) - Smart speaker with Alexa