From what I've seen from cars being put apparat by Sandy Munro company the complexity of EV cooling system maps roughly 1 to 1 with ICE. Both need cooling loops

From what I've seen from cars being put apparat by Sandy Munro company the complexity of EV cooling system maps roughly 1 to 1 with ICE. Both need cooling loops basically. There is however a staggering difference between companies. Compare cooling in Ford Mustang Mach-E and Tesla Model Y. Tesla just brutally crashes Ford in how much they are able to reduce number of parts, especially hoses and hose connectors. Tesla has something like 3x less hoses, 3x less parts and half the mass of the coolant in the loop (22kg vs 9 kg). Maybe part of what you are seeing is inexperience and incompetence of ICE car manufacturers. There are also other things that legacy car manufacturers are not willing to risk like megacasting. Something like 50 parts reduction in one cast, and good chunk of the factory floor for Tesla. And apparently the idea was out there long before Tesla but nobody tried it. While Musk loves taking financial risks if they can deliver significant engineering benefits. https://youtu.be/m1kHsd3Ocxc https://youtu.be/m1kHsd3Ocxc Not to mention that while Tesla may be not great at software engineering, ICE car companies and their supply chains are just ridiculously bad at it.