Sean Nelson· Registered
2017 Bolt EV
I doubt very much that the Bolt EUV uses the hydraulic brakes any more than the Bolt does (which is basically never), considering that it's using the same drivetrain and control electronics....there’s no question my EUV is using the mechanical brakes going down hills. I’ve tested both with and without cruise enabled, both with and without one pedal turned on. Regen maxes out at 10kW on cruise, while it goes much higher without cruise. There’s no other explanation for the difference.
The reason Regen maxes out at 10kW on cruise is likely because the car never has to slow down by more than around 1km/h and therefore doesn't need to absorb very much energy to do so. When you turn off cruise and use the pedal it's super easy to exceed that simply by slowing down more.
Try going down the hill in cruise and hitting the "Set -" button rapidly so that your speed decreases quickly, that'll require the car to regen more energy in order to slow down.