Not yanking anyones chain. Maybe their sales people should have better understanding. They told me the car will charge to 840 km. You will loose about 100 km depending on driving habit and weather. And by putting 21” wheels I would loose another 50-60 km. That means I should get a driving range of approx 700km to a charge. I’m only getting 350-400 before I need to re charge the battery. Far cry from what sales agent told me.
You're mentioning two things; let's separate them.
You charge your car and get stored kilowatts, not distance. The conversion of that stored energy to a distance estimate is based on those EPA estimates, and will certainly vary based on driving conditions including tires, elevation change, temperature, road surface, gross vehicle weight, acceleration. So we've beat that discussion to death and you know what EPA says you might expect based on a full charge. (By the way, "full charge" is recommended only for just prior to taking a longer trip, and "daily" charge stores much less than full capacity in order to extend battery life.)
Second thing, and your real point as far as I can read this, is that your driving distance between having charged to having to charge again is just over half of what you think you should be getting. Now if you read the owner's manual regarding charging..,
"Without a set charge limit, the charging system will charge the battery to the recommended level.
The vehicle dynamically adjusts the actual charging rate depending on the state of charge, ambient temperature, battery pack temperature, and position of the charge slider. You may need to adjust the charge limit higher or lower according to your driving needs. A higher charge limit will increase trip distance. Vehicles that are parked for extended periods should be plugged in and use a lower charge limit to maintain battery pack health." By default I think you get about a 50-60% charge. In the same section of the manual, it lists 40-80% as a healthy state of charge. Your warning indicator should come on when 80km of estimated range remains, call this 10% for our discussion here. So under these normal conditions you'll be charging to say 60%, driving using 50%, recharging at 10%, so you'll be using only 50% of that EPA total range estimate. And you can use all 100% if you charge to the "Distance" charge level and drive until all the lights go out. Not recommended, I've done that with my ICE once and was able to walk to a gas station. Doesn't work so well with an EV.
Make sense now?