 Very bad experience with Mercedes GLC 300 !!!We purchased a new Mercedes GLC 300 from Mercedes bens of El Cajon CA 92020 on April 29th 2017. It's only a half year time, Now the sound simplifier is not work, the dealer service told us we have to pay $1800 to repair out of pocket. It should be covered under warranty. But the dealer said there is leak from the trunk cause the damage so the warranty doesn't cover!There must be a design deficiency. It doesn't make sense the trunk is leaking!!! What a car! What a bad service!