One problem related to driveshaft has been reported for the 2013 Mercedes Benz C300. The most recently reported issues are listed below.
Problems with driveshaft breaking. I was leaving the parking lot and the wheel started making a loud squeaking noise. I was only driving a about 10-15 miles. As I pulled out of the parking lot and started to go faster the noise got louder. I was able to drive home. The next dam I took the vehicle to dealership and was told by the mechanic that driveshaft was broken.