I don't know how the 2013 Avalon Hybrid compares to the Gen 3 Prius, but mine also changes how the heater works in the winter too. Basically it doesn't come on until higher engine temperatures, and even then it keeps the fan slow until the engine gets plenty warm. Cruising down the highway it runs full blast once warm enough, but around town you get less heat. I guess it does that to keep the engine warmer since if it gets too cold it starts back up again.
So less heat in the winter and less A/C in the summer and a more spongy throttle in the Avalon.
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