For maximum efficiency, you would want to let the car coast or pick speed up on downhills to minimize power usage on the following flat or uphill section. But you have to deal with trafic and speed limits. May not be worth it.
It sounds like you drive slower than AP. Set AP to the same average speed that you drive and see how well it does.
Nope. it has ~80kWh usable now, about probably about 83 when new. I believe Model 3 LR is over 75kWh usable.
That chart shows an 8% difference with the RWD cars. Someone recently posted a side by side comparison tripthread with a RWD car (same tires) and found a 4% difference. In any case, it looks like the 20’ rims and tires make a bigger difference.
Maintaining set speed is the most efficient thing to do, versus slowing down and speeding up. Most people pick up this myth because when the hear that their engine is "working hard" they think it must be less efficient, when in fact for ICE engines the OPPOSITE is true, up to a certain limit. I would bet this is still true for an electric motor, you want to stay in the highest efficiency island on a 2-dimensional motor efficiency graph as possible.
Sure if you slow down going uphill it will be more efficient. It would also be more efficient to drive slow downhill. However it will take longer to reach your destination! It is optimal to go a constant speed to minimize loss. Unless you're using regen on the downhills, then it's better to go a little faster downhill since the regen has loss.
No, my point is explicitly about hills, not flat ground. Human intuitions simply aren't good at this, sorry. Take for example "allowing the car to coast downhill" - another bad intuition. So you're going to take increasing aero drag power that goes up with the cube of velocity, versus taking that energy pack into the pack? Sure there's an efficiency factor there and a non-trivially calculated break-even spot, but you're not figuring that out.
Physics says it takes the same amount of energy to climb the hill whether you do it slowly or quickly.
The faster you drive the faster you get there. While you might need to stop more often, you will spend less time charging because you will be charging at a higher rate due to a lower state of charge.
That works pretty well, but if I do not have CC on I just coast as I approach the crest of a hill so that I start the downhill at a slower speed. You would be hard pressed to notice a difference in travel time, I avoid regen, and I don't pick up so so much extra speed on the downhill portion that I'm going *too* fast or incur substantial extra Aero related losses.
Same energy different power. Yes I agree. I think people trying that "hyper-mile" by feel are at most just inadvertently going slower, losing aero losses on the way up and then starting slow at the top again. Might as well just go slower 100% of the time, perhaps saving even more energy.
