Today I carried out the following test. I drove a drive of about 10 KM country road (70 or 50 km/h) with mode E. The consumption was about 4 degrees at 22 KW. Same distance in “I Mode” (with engine was set the mode S. The consumption of 19, 7 KW came out. There was very little traffic on the road. During the test drive I had the energy flow display on the screen. The S mode almost always drives with the front engine, while the E mode always drives with the rear engine. Have you already observed this? The front engine seems to be more economical. Do you know what power the front and rear engine has? I have read once that the front engine has 140 KW and the rear engine has 245 KW(?)