06-20-2023, 09:25 AM | #1 |
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PHEV- one pedal operation
While my 50e is in the shop due to the check engine light fiasco, I have been given an iX 50 for a loaner. With that I have been introduced to the beauty of one pedal driving. Why can't we 45e/50e owners have that???
I want...no...I NEED one pedal driving in my life!!!! |
06-20-2023, 09:54 AM | #5 |
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06-20-2023, 11:17 AM | #6 |
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Yes, there is a brake pedal but once you get used to how the car slows down you don't really need it in most cases. While in B mode just let off of the gas and it quite smoothly comes to a stop. With the gear selector set to D it practically does the same thing except that it slows down to about 4 mph and you have to press on the brake to come to a complete stop.
Why would BMW not allow this feature in the 45e/50e? The Volvo XC60 T8 offers a B mode with one pedal operation so it is possible. |
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06-20-2023, 11:57 AM | #7 | |
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06-20-2023, 12:43 PM | #9 |
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My wife's EV has this one pedal driving and this in most cases sufficient for everyday driving , i use this car quite often and when return to my 50i quite often I am surprised why car doesn't slow down when release accelerator.
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06-20-2023, 01:58 PM | #11 |
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The beauty of one pedal drive is that if the vehicle in front of you is a bit far out, the car will coast till you get close to the car in front vs it will slow down immediately if the car in the front is not too far. I drove i4, ix and ix3 and loved this feature.
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06-20-2023, 02:18 PM | #12 |
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06-20-2023, 02:20 PM | #13 |
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For this it seems like I've had to have the ACC active for it to stop just before the car in front.
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06-20-2023, 09:54 PM | #15 |
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When I had an i3, I got used to the one-pedal driving. When I drove my ICE, it took a moment to reacclimate myself to needing to use the brake pedal. On the i3, once deceleration reached a certain level, it turned the brake lights on by itself. I have not noticed that with the X5, but then, I can't see the rear while driving!
Once you get used to one-pedal driving, the only times you need the brake pedal are if some idiot cuts in front of you, something unexpected occurs and you're too close, or the light changes and you're too close for regen to stop you. By feathering the accelerator, you could go from cruising, to coasting, to varying levels of regeneration, and max once you fully released the pedal. |
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06-21-2023, 03:44 AM | #16 |
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I drove an VW ID5 (BEV) lately and I didn't really enjoy B-mode for the most part to be honest. Only when going down a mountain it was helpful since I didn't have to use the brake pedal as much.
It usually comes down to what makes me use the pedals the least and in D-mode I would be coasting quite a lot while in B-mode I would've had to keep pressing the accelerator so the car doesn't slow down too much. Comes down to preference. But in any case coasting is the most efficient use of energy. More efficient than recuperating and accelerating again. (Since this always comes with losses.) |
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06-21-2023, 08:21 AM | #17 | |
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06-21-2023, 03:06 PM | #18 |
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It took me all of maybe 5-miles to figure out how to drive my i3 smoothly using just one pedal. Unlike in an ICE, or many hybrids which their transmissions may be programmed to coast when you release the gas pedal, on the BEV, you never needed to move your foot, just adjust the position to accelerate, cruise, coast, or slow at varying rates. I will say after driving it as my primary vehicle in day-to-day operation, when I got into my ICE, it took a little thinking to have to use the actual brake pedal again! I guess the point being, you have to learn a new way of driving with a high regen vehicle. BMW chose to keep those effects very mild so people didn't need to learn a new trick. When the i3 first came out, the regeneration maximum was considerably greater. New owners, treating it like an ICE, when they released the go pedal, immediately got thrown up against the seat belts, as the regen was abrupt and aggressive. I didn't like it, but they lessened the maximum regeneration available, but also created a smooth ramp up to satisfy those that might have been turned off in a test drive. With that 5-mile or so to figure things out, I didn't find it hard to drive the thing smoothly.
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06-21-2023, 03:15 PM | #19 | |
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06-22-2023, 09:06 AM | #20 |
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I think the reason not to do it with a PHEV is that it would be unsafe to have the car stop/go differently based on mode (electric vs hybrid). I am unaware of any gas powered vehicle that has one pedal driving.
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06-22-2023, 10:40 AM | #22 |
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The Volvo XC60 T8 which is a PHEV offers it so I don't see why not.
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