Those numbers actually make sense, given how each of the modes would be expected to work.But the fact is that the charge level stays within about a quarter of the full range most of the time. Where it is depends on your driving mode:
- ECON: 25% to 50%
- NORMAL: 35% to 60%
- SPORT: 65% to 90%
I don't think any of the vehicle manufacturers design for a 100% battery charge (with the possible exception of Tesla, since Musk always wants to push limits). From a strictly practical perspective.. limiting battery charge to 85-90% of full does not just give some improvement in total battery life span, it is also an easy way to steer clear of customers complaining about not getting as much mileage from a battery pack 2 or 3 years into ownership as they did on day 1.