They will never fix this, next time you pick a car make sure we vote with our wallet. If MB does not want to update this car with a simple software fix, then I will get audi next time
This is very frustrating, I also have 17 e300 and even with latest android auto interface it's still 2/3rds of the screen, I tried every option under dev options, forcing 1080p, and different user modes, like retail/demo/dev/xray did nothing to resolve this