My Subaru is too told for built-in USB Ports or charging mats. So I use a USB adapter in my cars cigarette lighter, and it works fine. You can find many good ones on Amazon. There are adaptors frequently listed on Thrifter as well. In fact, I ordered one just last week. I prefer adapters that have dual ports... which allows two people to charge their devices as well. I also buy lighting cables to keep in my car... it's just easier that way. Just make sure to read reviews before purchasing... and make sure the charging cables are MFi Certified.