I think thats Goggle maps not Garmin if you use it through your iPhone for a Navi
Mercedes says it powered by Garmin, with Google local search and street view.
Drive Kit Plus for the iPhone® [1]
With the "Drive Kit Plus for the iPhone®", your iPhone® 4/4S is comprehensively integrated
in the A-Class. It is integrated through the interaction of the Mercedes-Benz app called "Digital DriveStyle" with the "Drive Kit Plus for the iPhone®" interface in the vehicle, where the iPhone® is connected and charged. The "Digital DriveStyle" app is available free of charge at the iTunes® App Store [2]. In the app, extensive functions are seamlessly integrated in the new revolutionary user interface and shown on the vehicle display [3] . With the iPhone® connected, the "Digital DriveStyle" app is reliably and conveniently controlled via the ergonomically designed Controller.
Some of the functions of the "Digital DriveStyle" app:
- Advanced navigation solution from Garmin® with web-based real-time traffic information, Points of Interest search and 3D map presentation.
- Local search function powered by Google™ of Points of Interest with StreetView™ and destination transfer to Navigation.
- AUPEO!™ Personal Radio with individual music programming.
- Internet radio with national and international stations.
- Access to the track titles stored in your iPhone®.
- Facebook® Feeds and Twitter® Tweets from friends are read out aloud[4].
- Socially interactive experience through sharing and posting, e.g. the title of the song currently playing or of the navigation destination on Facebook® and Twitter®.
- Glympse™: Communicate to your friends - in real-time - your current location, your vehicle speed and estimated time of arrival.
- Intuitive CarFinder with automatic storing of vehicle location on iPhone®. By means of the integrated pedestrian navigation function in the iPhone® it is possible to find one's vehicle conveniently.
Mercedes-Benz Accessories GmbH - A-Class - Drive Kit Plus