Hello, ride your car as little as possible short distance and as much long distance as possible. But why? To simplify it is assumed after 5km the engine is warm: then 5* 5km are worse than 1*25km. That’s clear, because you are 25km cold vs 5km cold and 20km warm But 5* 10km vs 2*25km ? Then you are 25km warm and 25km cold vs 40km hot and 10km cold But in all cases the first 5km are cold. Does it matter that the percentage of the entire engine operating time is as warm as possible? After the engine is warm, it will not be able to “make up” the cold track retroactively again, or will it be ?? Sure. The engine is blown free again but the resulting wear of the first cold kilometers can no longer be taken back. What do you say? Maybe this helps the one or other to better weigh the decision between car and bicycle / on foot LG Passi_27