starting up an engine isn't nearly as "expensive" as people tend to think. engineering explained did a video on this, concluding that a warm start in a typical

starting up an engine isn't nearly as "expensive" as people tend to think. engineering explained did a video on this, concluding that a warm start in a typical four cylinder engine uses about as much fuel as idling the same engine for only ~7 seconds. [0] kinda makes sense, since this is the whole motivation for start/stop systems in the first place. not covered in the video, but IIRC cold starts use quite a bit more fuel since the engine needs to run rich for a few minutes while it warms up. [0] https://www.youtube.com/watch?v=dFImHhNwbJo https://www.youtube.com/watch?v=dFImHhNwbJo