I've used nothing but one-pedal in my Mustang Mach E and Lightning for more than 5 years now. When used properly it is extremely smooth and hasn't changed my reaction time when I need to use the brake pedal. It's all very natural.
I recommend you find an EV event that offers test rides. There are lots of events in April (Earth Month). At some you can both get a ride with an experienced EV driver and drive one yourself to try it.
Check out
https://driveelectricearthmonth.org/
Things have changed since I started this poll.
I've owned a Hyundai Ioniq 9 since September 2025 (right before the tax credit expired

), and have about 6000 miles on the vehicle so far, so I've got a lot more experience on it than I had at first.
The Ioniq 9 offers 5 total regen levels:
- Level 0 is "effectively zero" regen. Like, the clutch pedal is in on a manual transmission car.
- Level 1 is like a normal automatic transmission vehicle. Some regen, but not much.
- Level 2 is more regen, but nothing earth shattering.
- Level 3 pretty heavy regen.
- Level 4 is one pedal driving.
I did tests of efficiency, and driving behavior in level 1, and level 4 as I commuted to work. I put those results
HERE (<< yes, that is a link

).
The TLDR: Despite a lot more seat time with an EV, and testing out various regen levels, both my wife and I prefer low regen, with blended braking. Partially because its more similar to what we've had in other vehicles in the past, but also it keeps things simple, accelerator for accelerating, brake for braking. And I think some of it might be just the pedal feel of high regen on the accelerator (it gets quite 'heavy").
There are some situations where I'll use one pedal driving, but its pretty limited where. Those situations are almost exclusively low speed driving where you'd be between "creeping" and "braking" speeds, and constantly dancing between braking/accelerator. The best example this sort of driving, is in traffic at the airport. Everyone is jockeying for position, constantly changing lanes, and you're doing like 3mph for 20-30 minutes sometimes.
For more regular traffic, I prefer the adaptive cruise control (less lane changes, and the adaptive cruise is better at that constant 5-35mph adjustments than one pedal driving IMO).
For more regular driving, I prefer the lower regen. You're not missing out on any efficiency with blended regen on the brake pedal (meaning, the brake pedal adds progressively more regen to the system until it maxes out and engages friction brakes). But we each find its easier to be smoother with the lighter regen.
Today I had to take the kids to a friends house for something. I drove 22 miles with one pedal driving on the way, and the same distance back with low regen/blended braking.
Anything is possible - it is only software. But I guess my question is, why? Do people seriously just lift their foot completely off the accelerator all the time? Why? When you do that the car will start to slow (assuming you are not going downhill) so do you constantly speed up and slow down when going down the road? That is horrible for traffic.
You can absolutely coast with regen on the accelerator, you just lift off partially. Honestly this is no different than if you want to hold a constant speed, you just modulate the accelerator to hold the speed. This is literally driving 101. Have we lost the ability as drivers to hold a constant speed?
The last thing I will say is that with an EV, coasting has less of an effect on efficiency than it does in an ICE. Just set the cruise control to a set sped and let the car handle it - it will use power on the way up a hill and regen on the way down. It's also, as I said before, much better for traffic if you maintain a constant speed.
Actually, yes, I do lift off the accelerator all the time. And thinking about it, that might be some of the reason I prefer light regen. Its easy to "tell" when you're coasting/hardly accelerating/how much throttle you're giving, as you know that "none" is right where you lift off.
I live in a hilly area, with lots of back roads. Its a ~2.5 mile drive into town, with ~500ft of elevation loss (and about 200ft of gain). I often switch to level 0 regen (basically none, feels like freewheeling with the clutch in) on the drive into town, and just lightly cover the brake pedal, as I can coast a mile or more at a time.
I also do this on the highway, both on hills/mountain passes, but also when I see someone driving erratically/swerving nearby (I feather off the accelerator/cover the brake).
Or... other times I just cover the brake pedal... even when I'm in cruise control (adaptive cruise control).
Yesterday I was dropping my wife off at the airport (funeral :/), and we were in the HOV lane, and there was traffic as it was rush hour. It is a double white line to merge into the HOV lane, but as the speed differential was high, I still covered the brake as we were driving past the people in the "fast" lane. Because if there was some yahoo who decided to merge into the HOV lane where it is illegal/not allowed, I wanted to see it coming/already be reacting. No one pulled in front of me, but someone did pull in front of the driver 2 in front of me, so it does happen.