Having Wi-Fi enabled is highly recommended so your phone can use the hotspot proximity (and if you live in/near a city, you pass thousands of them a day)to register location information. Wi-Fi is far more efficient on batteries than other location sources like GPS. While Wi-Fi is enabled, you do not need to be connected to a Wi-Fi hotspot to take advantage of improved location accuracy.
Please enable Wi-Fi by going to: Settings > Wi-Fi > On.
Additionally, please check our Drive Detection best practices article. Making sure everything is set up correctly will ensure the best performance with our service.