Hard starting every morning - 2002 Mercedes-Benz C-Class

Really need a little more info. but at first thought sounds like either a cold start sensor if equipped. or a coolant temperature sensor. the cold start sensor squirts fuel directly into the intake upon startup wen the vehicle is cold. the coolant temperature sensor adjust fuel air mixtures based on the temp. of the vehicle. when they go bad they go to default which is usually about 175 degrees. so when the car is cold and the faulty sensor tell the computer that the car is 175 degrees when its not then the computer delivers the wrong fuel air mixture, the mixture as needed when its warm when the car is actually cold and needs a different mixture in order to start more easily.

Ould be several problems, temp sensor being one Fuel pump or fuelpump check valve, or ignition.