I don’t think that a single-moving-piece gas turbine powered cars are currently on the market? And how many are single piston? Go carts and motorcycles maybe, but cars?
And I was using complex as a shorthand for „more things to maintain“.
And I was using complex as a shorthand for „more things to maintain“.
Maintenance is a function of usage. BEVs still have coolant and lubricants, which means they also have pumps. They have a HVAC system which also means filters and refrigerant. Yes, you don't have to replace spark plugs and a timing belt, but both of those are infrequent and generally easy. You might have to replace brake pads less, but hybrids share that same feature. Hell, hybrids don't even have fan belts, alternators, ignition motors, and transmissions these days. They share nearly all of their underlying foundation with BEVs, for most of the same reasons you would want to go BEV in the first place.