Lots of brands are available which charges monthly fee for GPS tracker. The main reason for charging fee is because of GPS data which trasmit the information which costs money.
Hidden GPS tracker for car with no monthly fee are also available which you can buy online. The specification or hidden charges if available varies from company to company. So its better to enquire in advance before buying it.
Rollr mini is one of the best GPS tracking device for car with no monthly fees . This device is accurate and sends real time gps location to your computer or a smartphone. It also monitors and sends start and stop alerts along with trip data. In this device SIM is already installed so no need to search for another SIM. Rollr mini charges nominal fee per year so it is cost effective and efficient GPS tracker for a car.