If you’ve ever noticed the sleek fin on top of modern cars, you may have wondered what it’s for. While it looks like a design feature, the shark fin actually serves several important functions.

In the past, cars used long, retractable rod antennas for AM/FM radio signals. But with technological advancements, the shark fin has taken over. Positioned at the center or rear of the car’s roof, it handles multiple tasks. It improves radio reception, enhances GPS connectivity, supports satellite radio like SiriusXM, and boosts Bluetooth and Wi-Fi connections. It also aids telematics systems like OnStar for emergency communications.

Additionally, the shark fin is more aerodynamic, reducing drag and improving fuel efficiency. It’s also more durable and sleek, giving cars a modern look.