The 2nd gen Prius (probably 1st gen too) has a distinct pre-travel during which it only regenerates, and only past a certain point does it apply mechanical brak

The 2nd gen Prius (probably 1st gen too) has a distinct pre-travel during which it only regenerates, and only past a certain point does it apply mechanical brakes. When the battery is full (after descending a long hill) the pre-travel does nothing at all. Of course there's no engine braking during coasting when the battery is full, so you'll know ahead of time. On newer models, the pedal behaves in the manner you describe.