Well, what do you know? About 20 seconds of “Googling” resulted in the following information:
‘One reason for such mileage is that the automatic, built in Japan by Aisin, includes a “neutral idle” feature that shifts into neutral when the car is stopped but running, thus eliminating the drag on the engine from the torque converter. The gearbox also includes an “automatic throttle kick-down” feature that activates more immediate downshifting when you open the throttle all the way, such as in passing situations.’
I’m not quite sure how the automatic throttle kick-down on that transmission is unique, but then again, this came from an auto columnist who may not be especially savvy in terms of technical knowledge.
And, since the above information did not come from the manufacturer, my advice remains the same–namely to use your Owner’s Manual for information regarding the functioning of your transmission. If it does not appear to be functioning properly, then you need to take the car to the dealership for warranty service.