Hello I have a technical question about my car, maybe someone who knows about Mercedes can help. My car is engine braking bad to the point the oil smells like it’s burning. Recently had someone brake bleed the brakes but they did it wrong and air is in the system, so the brakes feel squashy. Would that be the cause of the engine braking? Because before the that, the car ran great. It’s for a 2011 c300



The car just feels completely off and not in sync, making the drive super uncomfortable so going someone can help. No check engine light also