Moin G-nossen. My G500 (2005, 72 TKM mileage) brings its full power only cold at the moment, after you just started it. After 1 or 2 km the gas intake becomes tough, or it needs clearly more gas foot to accelerate normally. What I noticed: engine fan jumps frequently and always at high speed at the same time. But then it goes out again at some point. Now the outside temperatures were very high the last days… But I think despite The temperature of the cooling water is normal. MKL is off. Error memory is empty. But consumption is significantly increased (about 30l to 100km). Does anyone have an idea?