eli_
Member
One-pedal driving is something I had been eagerly looking forward to since I bought the car a year ago. I tried the HOLD mode for the past day, and it pains me to say that I don't really like this implementation for the following reasons:
1. For whatever reason, the motor noise seems significant louder when in HOLD than in ROLL.
2. For my driving style (lift my foot off of the go pedal often to maintain a good constant distant between my car and the car in front), HOLD seems to be less energy efficient for the 100+ mile (about 60/40 Highway/City mix) with it on.
3. The ride seems rougher when HOLD is on. I have to admit this may be something in my head, because of the extra motor noise I am hearing.
Furthermore, HOLD's performance in snowy/icy weather is unknown at the moment.
I have gone back to ROLL.
I've noticed all of the above except unsure about #3, I'm still on the fence about it but keeping it enabled so far because it has some advantages too.
Also apparently there are also some weird edge cases where it can produce unexpected torque and acceleration. This is all confusing theory/guesswork, but it seems to apply "negative" torque to decelerate the car on a hill against gravity (i.e. powered motor torque instead of friction brakes or just regen). But to do that it needs to sense the road grade and predict the correct amount of torque to counteract gravity, but sometimes the prediction is wrong because the road grade changes unexpectedly, and so it generates torque the wrong way. There were some folks on Reddit reporting unexpected acceleration from the feature. It's somewhat reproducible on a moderate incline, if you reverse and slowly turn left or right to 45-90 degrees, then lift off the accelerator, the braking torque is applied forward instead of backwards (it still thinks you're going uphill).