Most modern cars have USB-A and USB-C ports that are meant for data and infotainment purposes, not charging. Plugging your phone into these ports can barely trickle charge it, let alone maintain its current battery level. Instead, use the 12V auxiliary power outlet, which is designed specifically for charging devices. A dedicated fast charger that plugs into this outlet can deliver much faster charging speeds than your car’s built-in port.
Source: https://www.howtogeek.com/stop-using-your-car-usb-port-to-charge-your-phone