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Originally Posted by evone
A better way to compare the real world efficiency of the series hybrid with the parallel is to compare the Tesla with the Prius. Although the Tesla is a pure electric vehicle, it can be evaluated as if it had an on-board generator.
The Prius has a combined 55 mpg vs the Tesla’s 7.85 km per kwh of utility energy. The Tesla is slightly lighter than the Prius but the Prius was designed to maximize efficiency, whereas the Tesla was designed to maximize performance.
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Telsa is a two seater roadstar and Prius is a mid-size sedan. It's not apple to apple.
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7.85 km / kwh from a 35% efficient Diesel Generator, assuming an equivalent conversion efficiency as the Tesla’s battery charger, yields 68 mpg for the Tesla vs. 55 mpg for the Prius. Reasonable to assume weight of Diesel Generator plus fuel vs removed battery size would be similar.
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So, your Diesel Generator weighs nothing and the 7.85 km / kwh fuel economy stays unchanged.
Ken@Japan