Thieves will have a much harder time stealing a factory navigation system than a smartphone or a portable unit that's stuck to the windshield with a suction cup. Theft resistant: A portable navigation system can draw the attention of thieves. Extended warranties might or might not include the navigation system. If anything goes wrong with the system, you can take it to any factory dealership for a free repair within the warranty period. Warranty coverage: Since the factory navigation system is part of the vehicle, it is covered by the bumper-to-bumper warranty. They're especially handy for those who frequently travel to places with limited cellphone service.

This means that you can use such factory features as voice activation and other interface methods such as control knobs or on-screen buttons.īetter GPS signal: In-car navigation systems are satellite-based and should always have a signal, even in the most remote of places. These systems typically have larger screens that are mounted in well-thought-out locations and are designed to work seamlessly with the vehicle. Integration: The factory-installed navigation system will appeal to the car buyer who likes a clean, high-tech, integrated look.