Honda doesn't make this easy to figure out.
I'm still not clear what "Normal" mode is or how that would be different from HV.
I clearly see "Sport" as a mode. It leans toward providing more power at the expense of using more gas and battery power. It also allows stronger Regen.
I see HV mode as Hybrid. As I understand it if HV mode is off then the car is in EV mode (assuming sufficient charge in the battery) and the ICE is not in use. If HV mode is on then the car is in hybrid mode using the ICE to provide power to the battery so the electric motor can power the wheels. Above 100 mph the engine is directly connected to the drive train.
HV+Charge keeps the ICE running 100% of the time and the battery is being charged. Econ does not apply to HV+Charge. Is this the fourth mode?
I see Econ as an enhancement to other modes except Sport. That is when the car is in EV, Normal or HV mode then ECON can be layered on to improve efficiency. So rather than HV being used in ECON I think it's the other way around. Econ changes the response of the accelerator pedal, and modifies the AC so it uses less power.
All of this is a bit mute for us because we have only two modes of operation in our family. EV mode with ECON for around town, and HV mode with Econ for the highway on long trips. In the end it just all works superbly and ever so smoothly.
Who can offer another description of the "modes"?
Since I don't have my car yet, the following is based on my test drives and from reading/researching.
Normal, ECON, Sport mode are driving mode where the car drives in EV until the juice runs out (12%) or if you press the HV button or if your press the accelerator pass the detent. Different mode is program to determines how the car response to power output, climate control, throttle response. Think of you owning 3 different electric car manufactured by BMW (Sport), Honda (Normal) and Yugo (ECON) (slightly exaggerated

) and you can choice which car you drive that day (or moment)
Normal mode has nothing to do with HV 'mode' as you can drive in all 3 modes with or without HV 'mode' on.
HV is hybrid meaning the car will use the engine when the situation arises like not enough battery, hard acceleration, continuous high speed steady drive (for efficiency determines by the car and the current driving condition). And even when the engine comes on, the car will determine if the engine is acting like a generator only or if it will behave like a regular engine/transmission and directly turning the wheel or both.
I remember when I did my test drive (not knowing much about these different modes and HV). I drove on the highway at around 105kph and press on the HV button, nothing happen as the engine did not come on right away until I hard press on the accelerator. And the engine did not go off once I cancelled HV which confuses me. I had to stop the car and restart to get back to EV mode even after I exited the hightway and driving on city road with plenty of battery charge left.
If someone can test all 3 EV modes with or without HV button on (including HV+charge) in highway and city driving and note if and when the engine comes on and turn off, that would be great
Questions I have,
1 Does Sport mode really provide more regen? I know it will keep the regen level without cancelling it but does it actually provide more regen slowing down from a given speed compare to ECON EV mode?
2 in a control test in exactly same weather, road condition and speed, does Sport mode uses more battery charge even though you drive like you are driving in ECON mode?