Gen 4 not only comes with a more powerful motor, but also a larger battery.Robikinkela: you aren't making a fair comparison, not that I am sure without cracking open the source code could you. But regardless setting the gen3 at xx/100 and the gen4 at xx/100 isn't a fair comparison. The second (XX/100) indicates what % of motor power you have access to. And since the gen4 has a more powerful motor its always going to use more juice, thats the fun factor you speak to on the gen4. Try a setting like 25/75 on the gen 4 and you will see the mileage get closer, or if you really want to suffer ride eco in 25/25 on the hills.
If I'm not mistaken
From 700 to 840 is a 20% increase, while 565 to 666 is a 17.88% increase in power.
So the battery increase is actually bigger than the motor power bump. Shouldn't that help compensate for the added power consumption?