I was surprised to see a 30-pin connector in our brand new Mercedes-Benz. You'll have to bring your own Lightning-to-30-pin adapter to use newer iOS devices. Android users can make use of the standard Bluetooth audio streaming.
The Harman Kardon audio system sounded fantastic. With simple tweaks, it could be bass-heavy for electronica and hip hop, crisp and clean for more delicate genres, or loud and clear for a bit of Led Zepplin.
This diesel-powered variant of the 2014 Mercedes-Benz E-Class may not be as powerful as the competition from Audi and BMW, but it's more efficient and no less capable in real world driving. It's too bad that the tech is so awkward.