Hello first of all, here some data about the car: It is a C30 2.0 is 3 years old in February and was bought by me at the beginning of November with 42000km. In November I heard already a funny noise, could not assign it and did not know if it is normal. It comes from the engine compartment at the front left , if you stand directly in front of the car. Can it unfortunately not describe perhaps a little mechanical, in any case the dishwasher has become louder since we have minus degrees. For 3-4 days the consumption has risen when driving, it is now at 35-45 L. act. / consumption. Is this normal? I had considered if it might be due to the spark plugs, which have not been changed according to the service booklet.