The Best Bluetooth Kits for Every Car Stereo

If you want to stream music or listen to phone conversations through your car’s speakers, but your vehicle didn’t come with Bluetooth, an add-on Bluetooth kit is an inexpensive and effective solution. After testing dozens of models, we think the Besign BK01 Bluetooth Car Kit—which plugs into a car’s auxiliary-audio input (aux-in) jack—offers the best combination of sound quality, phone usability, and features. Below, we also include picks for vehicles that don’t have an aux-in jack, or for people who primarily use their phones for calls, rather than for music.