Differences Found in Range Capacity When Using 1-pedal Drive vs. Not Using it

[Teslaeata]

The statement is absolutely true. On my MME in 2PD, regenerative braking is applied when you press the brake pedal. There is no regenerative braking when I release the throttle in 2PD. This is the difference between 1PD and 2PD.

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[GJTBOW]

The statement is absolutely true. On my MME in 2PD, regenerative braking is applied when you press the brake pedal. There is no regenerative braking when I release the throttle in 2PD. This is the difference between 1PD and 2PD.

 

[Blairwarlock]

I use 1PD in the city and around town to save brake wear (unless my wife is in the car then I turn it off as she HATES it as a passenger). On the open highway (not stop and go traffic), I turn it off. My logic is if I’m losing speed and momentum each time I come off throttle with 1PD, then turning it off allows me to “coast” off throttle with less impact to speed and without needing more battery/on-throttle input to overcome that loss. Over many, many miles, I would assume this has some impact on effective battery range.

 

[Adventureboy]

I use 1PD in the city and around town to save brake wear

On the Fords, 1pd vs 2pd does not have much effect on brake wear. Other manufacturers do it differently, but Ford integrates regen into the pedals in either mode, so brake wear is minimal unless you brake aggressively. You still get full regenerative braking in 2pd when you apply the brakes, hence why there is no notable range difference between the two modes, given the same driving style. Pick the one you like

 

[Blairwarlock]

On the Fords, 1pd vs 2pd does not have much effect on brake wear. Other manufacturers do it differently, but Ford integrates regen into the pedals in either mode, so brake wear is minimal unless you brake aggressively.

Yes I understand, but much like using cruise control, 1PD delivers more consistent and even braking input, which at some level gives me better brake wear than human input.

You still get full regenerative braking in 2pd when you apply the brakes, hence why there is no notable range difference between the two modes, given the same driving style. Pick the one you like

I was referring to coming off throttle WITHOUT applying the brakes in 2PD mode. In 1PD, coming off throttle automatically applies the brakes so the distance traveled in a side by side comparison would yield a win to 2PD every time if you allow the car to come to a stop on its own without brake input.

 

[ChrisO]

I doubt MME’s are configured differently in this respect in UK, no noticeable regen is not no regen

I think they are talking about "Brake coach" not regenerative braking. But on the other hand, I think there is other indications that "some" regenerative braking is being done in two pedal mode even if you have yet to apply the brake. So, I believe the conclusion that there is always some regenerative braking is correct.

To see the Brake coach you have to be in Engage and have the option on. If you are in Whisper or Unbridled it will not show (This is what I think the message above is saying). But for sure regenerative breaking will be used (when either you are in 1 Pedal mode with your foot off of the accelerator or pressing the brake in 2 Pedal mode).

I drove 2 Pedal at first with Engage and with Brake coach on, and then later switched to 1 Pedal. My wife tried 1 Pedal but didn't like it and switch back to only using 2 Pedal (she drives in Engage and I drive in Unbridled).

And here my observations.

Let's put this in context. What "coasting" are people comparing too?

If I'm in a manual ICE car and I let off of the gas and have the clutch all the way in, this is as true of coasting you get (and note that if I don't have the clutch all the way down, I can get anything from very subtle engine breaking to a violent stop). If I have an automatic ICE car and let off the gas, I'm not really "coasting" in the same way. There will always be some drag.

My wife drives in Engage mode with two pedal mode because the amount of drag closely matches an automatic transmission. In Whisper there is almost no drag, but without exact cars one manual transmission and another in Whisper and see how far they go "coasting" I don't think it is really easy/practical to say which has more or less drag. The "drag" in this case is going to be regenerative braking.

My wife drives in a similar manner to I do. She has the Brake Coach on, and almost always get 100% when she stops. It is very clear to me that we are basically getting the same range. This isn't a surprise to me. There might be minor differences even if I switched back and forth between 1 Pedal and 2 Pedal because of the "coasting", but frankly I don't "coast" enough to really think that would add much to anything.

In a side note to this. I can drive in Engage mode or Unbridle and for the most part never notice the difference. Why? On the acceleration side, this just like any car if you are light on the foot (lighter than on a less powerful car) you can still accelerate off of the line slowly. So, I automatically adjust to that to get the speed I want. I now drive in Unbridled because of the silliest reason. I don't like the big bar SOC without a percent, and don't want to have lane keeping on getting rid of it in that mode. As a second lessor reason, I like the fact that if I have to get out of a tight situation, it might take of a bit faster.

On the slowing down with 1 Pedal, being a person that learned "manual transmission" on a motorcycle in an Air Force motorcycle course that was very much focused on clutch control, the use of 1 Pedal very much reminds me of the same thing. It isn't either on or off, it is feathering it to get exactly what kind of breaking you want. This isn't too dissimilar to different cars having "touchy" breaks or steering.

 

[Kamuelaflyer]

Engage, Unbridle, and Whisper are drive modes.

 

[goodguy]

Most efficient is to accelerate as slow as possible and brake as little as possible. Meaning coast into signals and try to never stop. Every time power is converted from or to battery expect 10% efficiency loss. You can achieve this many ways.... but ideally you never have to brake. GLIDE and Coast is most efficient. Whisper allows more coasting than other modes and putting into neutral allows you to coast the furthest. BUT the real savings comes by anticipating the upcoming coast and DO NOT accelerate or press the accelerator anymore than absolutely needed...That's the benefit. keep the power IN the battery. do not turn it into momentum to have to convert it back. 20% efficiency loss in doing so. DRIVE like a little old man.

 

[Blairwarlock]

Let's put this in context. What "coasting" are people comparing too?

If I'm in a manual ICE car and I let off of the gas and have the clutch all the way in, this is as true of coasting you get (and note that if I don't have the clutch all the way down, I can get anything from very subtle engine breaking to a violent stop). If I have an automatic ICE car and let off the gas, I'm not really "coasting" in the same way. There will always be some drag.

Without introducing manual vs auto transmissions, or clutch engagement relative to drag, take the exact same MME, same drive mode, and simply switch 1PD on then off. You will coast a greater distance without any manual brake input with 2PD coming off throttle. Drive on a flat road, reach 60MPH and come off throttle (do not manually brake). When the car comes to a stop, mark the distance traveled from the time you come off throttle. Do this with 1PD then 2PD.

 

[ChrisO]

Most efficient is to accelerate as slow as possible and brake as little as possible. Meaning coast into signals and try to never stop. Every time power is converted from or to battery expect 10% efficiency loss. You can achieve this many ways.... but ideally you never have to brake. GLIDE and Coast is most efficient. Whisper allows more coasting than other modes and putting into neutral allows you to coast the furthest. BUT the real savings comes by anticipating the upcoming coast and DO NOT accelerate or press the accelerator anymore than absolutely needed...That's the benefit. keep the power IN the battery. do not turn it into momentum to have to convert it back. 20% efficiency loss in doing so. DRIVE like a little old man.

Absolutely agree it is the "how you drive" that makes the most difference. Even though I don't "coast" much in 1 Pedal mode, I definitely "look ahead" and reduce speed when I see that I'm just "racing to a stop light".

It seems like a lot of people have never figured this out around here. They take off like they are in a race and end up hitting their brakes constantly.

People around here seem to judge the speed limit by the bumper in front of them.

 

[ChrisO]

Without introducing manual vs auto transmissions, or clutch engagement relative to drag, take the exact same MME, same drive mode, and simply switch 1PD on then off. You will coast a greater distance without any manual brake input with 2PD coming off throttle. Drive on a flat road, reach 60MPH and come off throttle (do not manually brake). When the car comes to a stop, mark the distance traveled from the time you come off throttle. Do this with 1PD then 2PD.

Yes, that seems like a good test. Has anyone done that?
I would certainly be interested in the results.

Note I don't think you would have to go to 60MPH, lower speeds should be reasonably close to the same, and you wouldn't need as long to accelerator and stop.

 

[HuntingPudel]

Without introducing manual vs auto transmissions, or clutch engagement relative to drag, take the exact same MME, same drive mode, and simply switch 1PD on then off. You will coast a greater distance without any manual brake input with 2PD coming off throttle. Drive on a flat road, reach 60MPH and come off throttle (do not manually brake). When the car comes to a stop, mark the distance traveled from the time you come off throttle. Do this with 1PD then 2PD.

There is a huge flaw in this test. in 2PD, the car will continue going once it's decelerated to 4MPH. It will never stop in 2PD without using the brake pedal. 2PD never applies the brakes (outside of emergency stop situations). 1PD applies the brakes when needed depending on go pedal angle and current vehicle speed (emergency stop situations notwithstanding). So of course in 2PD a car is going to go farther than in 1PD since it's never going to stop without intervention (either an obstacle or depression of the brake pedal).

Drive mode (Whisper, Engage, Unbridled) controls the aggressiveness of regen. You can observe this in a GT by watching the power meter, even if it's not readily apparent to the gluteus maximus accelerometer.

 

[AtomicInternet]

Differences found in range capacity when wearing shoes vs. wearing flip flops. Seriously?

Range capacity varies between people.

 

[goodguy]

There is a huge flaw in this test. in 2PD, the car will continue going once it's decelerated to 4MPH. It will never stop in 2PD without using the brake pedal. 2PD never applies the brakes (outside of emergency stop situations). 1PD applies the brakes when needed depending on go pedal angle and current vehicle speed (emergency stop situations notwithstanding). So of course in 2PD a car is going to go farther than in 1PD since it's never going to stop without intervention (either an obstacle or depression of the brake pedal).

Drive mode (Whisper, Engage, Unbridled) controls the aggressiveness of regen. You can observe this in a GT by watching the power meter, even if it's not readily apparent to the gluteus maximus accelerometer.

Also switching the dial to neutral will give you the most rollout.

 

[goodguy]

Most efficient is to accelerate as slow as possible and brake as little as possible. Meaning coast into signals and try to never stop. Every time power is converted from or to battery expect 10% efficiency loss. You can achieve this many ways.... but ideally you never have to brake. GLIDE and Coast is most efficient. Whisper allows more coasting than other modes and putting into neutral allows you to coast the furthest. BUT the real savings comes by anticipating the upcoming coast and DO NOT accelerate or press the accelerator anymore than absolutely needed...That's the benefit. keep the power IN the battery. do not turn it into momentum to have to convert it back. 20% efficiency loss in doing so. DRIVE like a little old man.

Also be aware. When the car says 100 braking. It’s meaning 100 that could be achieved. It’s not saying it got 100% of the power back. There are efficiency losses.

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