Ever since I started using iPhones I've accepted that a daily charge is usually required though most days I could probably go 36 hours between (iPhone 5).
The turn by turn feature of apple or google maps does run the battery down somewhat fast but l leave all services turned on. My car has BT so enabling that on the phone each time would be a PITA.
2013 Audi A4 - Premium+/Sport/MMI/B+O Audio
2007 BMW E90 335i (retired)