Hello, I did an inspection at Volvo before about 400 KM in the frame of which also the spark plugs and the air filter were replaced. According to the invoice / part number these spark plugs were used:http://www.skandix.de/…/ 1015972 or 31272427 After now about 400 driven KM I notice that the fuel consumption has increased enormously, without my driving profile or driving style had changed. I record the consumption since about 85,000 KM ( Spritmonitor ). On the winter tires it can not be lying, they have been on it since October. There were no full gas drives, the car was not driven loaded in this time. Since one month I consume about 1.5 liters more, because I only drive 7 KM simply to work and therefore put off the car, if it has just become warm. Earlier, when I drove only long distance was the consumption at 6,7 liters. Because of the shorter distance and the cold season the consumption can be already about 8 liters. I have 2 pictures attached to it, but it would be nice to see the mixture, but it is wrong to see the fuel?