I own the PHEV model and the
I own the PHEV model and the only scenario I’ve found where it is more efficient to run for awhile in Sport mode is if you’re coming into an area where there will be a considerable amount of “sitting” in stopped traffic. If the battery is low it helps to get it up to an amount that will allow you to not run the engine. I’ve found it only takes about 1-2 miles of battery capability to run the air conditioner for an hour standing still. Otherwise, sport mode is just for fun.