[bimmerbahn]

Hi have you seen this ?

Help! Really slow charging at fast chargers

I’m on a road trip, at the moment in Austria. Yesterday I drove through Germany and I noticed on 3 out of 4 charging stops the car charged as half speed of what it normally does. I arrived with less than 10% for each stop and charged up to 60-80%.

www.i4talk.com

Yeah, looks eerily similar to what I experienced. If it is "by design", then they should notify the driver that the DC charging speed has been reduced due to too many consecutive DCFC sessions.

 

[i4m50Norway]

I think it is Tesla that has the guess-o-meter.
A few years ago driving down 300 meters, we discovered that it only is able to show 999 kilometer range in the Model S.

On the BMW i3 if you enter your target in the navigator, it is very accurate. When I am driving to the limit of the range, I trust it so that I sometimes arrives with less than 3 km range left, by switching to Eco Pro and EcoPro+ when my range goes below target. I actually expect the i4 to be at least as accurate as the i3, and that it will improve with newer sw updates.

 

[tburdess]

I have no idea how I'm going to plan a trip with this thing, lol.

there are so many DCFast stations, you dont need to plan unless you're going someplace weird. Been traveling from coast to coast for 4yrs with no issues on the CCS DCFast network that continuously just gets better everday. Pulled a 4x8 uhaul trailer with my 2018 Bolt 2800 miles this past week. And since the 1st weekend in april I've road tripped 12600 miles'ish. Just pick a charger a couple hours away, drive, plug in, splash the bottom of the battery while you go to the bathroom, rinse and repeat. no planning necessary, other than knowing where your going.

 

[elon is a fascist]

Total Charged 75KWh and 61% was current charge (i.e. 39% consumed ~ 31KWh), total consumption from date of vehicle purchased: 106 KWh, Total miles: 329. Total miles per KWh = 3.10

That's about par for the EV course. My i40 is averaging 3.9. I have 18in wheels, what drive mode are you in? Are you putting into "B" to get max regen and one pedal driving.

There is a learning curve to EVs you'll get better as you acclimate. I got rid of my Ioniq 5 because I was getting about half the efficiency as this car so in the grand scheme 3.1 isn't even bad.

 

[bmwi4eDrive40AventurinRed]

Then I think you will be ok.
Car uses a lot of extra energy in the start to cool down cabin and other components. If you only drive 10 - 20 miles, the average consumption will be high - and the car will estimate a short range. This will also happen in low winter temperatures.

I think I would go inside the car, use the navigator and enter a target 150 miles away, and then see what the car changes range too. If that does not help - you have an excuse to do take it for a longer drive

Another test could be to change inside temperature to 27 degrees - and see if range estimate increases ?

Hey I followed the instructions posted on this site (i.e. I drove at 45 miles/hr on eco mode with B gears On ) Now my range is showing in 280sh range. I also checked the BMW official web site that 19" wheel which my car has, gives range of 282 mi.

 

[ssh]

Hey I followed the instructions posted on this site (i.e. I drove at 45 miles/hr on eco mode with B gears On ) Now my range is showing in 280sh range. I also checked the BMW official web site that 19" wheel which my car has, gives range of 282 mi.


View attachment 13884

Keep in mind, D mode with adaptive regen in Eco Pro is your most efficient mode.

 

[Woohoohoo]

Keep in mind, D mode with adaptive regen in Eco Pro is your most efficient mode.

Not B mode in Eco Pro?

 

[ssh]

Not B mode in Eco Pro?

Nope.

Optimizing driving style (page 278):

Power gauge When ECO PRO driving mode is activated, the display switches to a special configuration.

When driving efficiently, the power gauge is colored blue. The display will change to gray if the driving style is inefficient.

Activating adaptive recuperative braking for efficient driving. Additional information: Driving in detail: eDRIVE, refer to page 123.

The page 123 stuff talks about the benefits of coasting when possible and how adaptive will sometimes coast and sometimes charge.

 

[Woohoohoo]

Nope.

Optimizing driving style (page 278):

Power gauge When ECO PRO driving mode is activated, the display switches to a special configuration.

When driving efficiently, the power gauge is colored blue. The display will change to gray if the driving style is inefficient.

Activating adaptive recuperative braking for efficient driving. Additional information: Driving in detail: eDRIVE, refer to page 123.

The page 123 stuff talks about the benefits of coasting when possible and how adaptive will sometimes coast and sometimes charge.

Thanks didn’t realize that!

 

[khorions]

Not B mode in Eco Pro?

I did earlier today a trip of 89km and had an average "consumption" of 12,8 kWh/100km by 30 degrees celcius so airco was on all the time. I did this also in Eco Pro mode with B mode enabled. The only thing I had was the cabin precondtioned before I left. Speed on highway in the Netherlands is limited to 100km/h and in Belgium I had to stay below 120km/h because of traffic. It might be indeed that B mode is perhaps still not the most efficient but it did his job really well for me today.

 

[yobro 24]

Can we once and for all sort through the misinformation about B and auto mode as being the most efficient. My dealer has confirmed that when using the brake pedal it will regen as much as it can before using physical discs and pads. If so, you can be just as efficient in any regen mode if you anticipate the road ahead properly.

Is this correct or not . I have just driven a Genisis with, like, tesla, doesn't regen at all when using the brake pedal. Ie. It does not have blended brakes like my polestar does. Bit of a deal breaker for me as I have 1 pedal driving. It is ok around town but not OK when gunning it down country lanes.

Please only respond if you know factual information. If the i4 doesn't blend brakes the n I need to cancel my order on Monday because I have a sept build on my m50.

 

[ssh]

Can we once and for all sort through the misinformation about B and auto mode as being the most efficient. My dealer has confirmed that when using the brake pedal it will regen as much as it can before using physical discs and pads. If so, you can be just as efficient in any regen mode if you anticipate the road ahead properly.

Is this correct or not . I have just driven a Genisis with, like, tesla, doesn't regen at all when using the brake pedal. Ie. It does not have blended brakes like my polestar does. Bit of a deal breaker for me as I have 1 pedal driving. It is ok around town but not OK when gunning it down country lanes.

Please only respond if you know factual information. If the i4 doesn't blend brakes the n I need to cancel my order on Monday because I have a sept build on my m50.

Quoted the manual above. Further:

Starting page 117: Energy-saving driving and maximizing the range

Then page 124: Strength of recuperative braking In selector lever position B, the energy recovery is high and the deceleration is strong. For driving in selector lever position D, the strength of recuperative braking can be adjusted via iDrive. ▷ Depending on the equipment adaptive energy recovery: energy recovery and decel-eration are automatically adapted to the respective driving situation. Adaptive recuperation, recuperative braking, refer to page 279. ▷ High energy recovery: the vehicle deceler-ates fast, more energy is returned to the high-voltage battery. ▷ Average energy recovery. ▷ Low energy recovery: the vehicle deceler-ates more slowly, less energy is returned to the high-voltage battery.

Note that the High/Med/Low is for regen in D mode; using the brake pedal in D mode creates regen until the brake pedal force exceeds what’s possible from regen and then it engages the physical brake pads/rotors.

 

[yobro 24]

So, if I interpret this correctly, the brake pedal will regen to max before using traditional friction brakes.

 

[Woohoohoo]

So, if I interpret this correctly, the brake pedal will regen to max before using traditional friction brakes.

The electric motor will regen before you need to use traditional brakes. If you can get used to one pedal driving in B mode you almost never need to use traditional brakes so you brake pads will last forever

 

[ssh]

So, if I interpret this correctly, the brake pedal will regen to max before using traditional friction brakes.

Yep.

 

[Woohoohoo]

Range issue: I got my BMW i4 edrive40 2 weeks back I am getting very less range as expected.
Outside temperature is ~27 degree celsius
19" wheel
A/C is always on while driving

when 74% charge its showing range of 176 miles
Doing maths 100% will be approx: 238 miles

I am not even driving it aggressively. Any idea what I am doing wrong?

View attachment 13749







Update on this: I followed the instructions posted on this site (i.e. I drove at 45 miles/hr on eco mode with B gears On ) Now my range is showing in 280sh range. I also checked the BMW official web site that 19" wheel which my car has, gives range of 282 mi.

View attachment 13885

When I got my car last week dealer charged to 100% and range was 246m. Driven about 140 miles and just charged to 81% and range is 231m

 

[yobro 24]

The electric motor will regen before you need to use traditional brakes. If you can get used to one pedal driving in B mode you almost never need to use traditional brakes so you brake pads will last forever

These two sentences don't go together in my mind. If the brake pedal applies max regen first then, unless you are stupidly heavy on the brakes (eg. Track), then your brake pads will last as long as if you use B.
On my polestar, it is incredibly rare that I use the pads (the car lets you know if you do).

 

[Woohoohoo]

These two sentences don't go together in my mind. If the brake pedal applies max regen first then, unless you are stupidly heavy on the brakes (eg. Track), then your brake pads will last as long as if you use B.
On my polestar, it is incredibly rare that I use the pads (the car lets you know if you do).

Agree, you only use brake pedal/pads if regen is not sufficient to stop car. It's also not the brake pedal that is pressed that regens energy (that in turn results in the pads/disks slowing the car down by converting kinetic energy to heat), it's lifting your foot off accelerator pedal, which in turn causes the electric motor to act as a power generator (believe it's by reversing polarity of electric motor) and converting kinetic energy to electric energy that's fed back to battery pack. The extent to which this happens depends on the regen setting selected.

 

[yobro 24]

No. This is wrong too. If you use the brake pedal you do use regen if it is a blended braking system. Unfortunately in the bmw you can't fully turn off one pedal driving, you can only reduce the feel of it. It doesn't matter which setting you have it set to, the amount of regen is exactly the same (you might press the brake pedal more if one pedal is set to low but you still recoup exactly the same kinetic energy). Ideally, you could switch off opd and freewheel (which is far more efficient than regen) but you can't on this car. You can very carefully position the accelerator to achieve freewheeling but it is more effort than simply taking your foot off the accelerator. All of the above is probably irrelevant to most people because they enjoy opd. Just not me.

 

[Flyingman]

So I'm preparing for my first "road trip" without umbilical cord! It is an overnighter to Central Florida and there is no advertised charging there but perhaps a level 2 enroute or slightly off route. I've slow charged my i4 40e at 12 amps (3kw/h) to 100% so I leave full up. My range is showing as 270 miles and one way is about 128 miles, plus I expect a few additional miles at location, so roundtrip approx 260-265 miles or so, so I'm uncomfortably at the end of range. But I truly expect my actual range to improve based on type of road and speeds I'll be driving, so I'm expecting to get closer to 300 miles plus.

My friend has a 50amp RV plug at his house which is available should I need it. My plan is to not recharge at all unless my return indicates I'm really cutting it too close.

An important point here is my friend (best friend from college) is anti EV big time. He was laughing that my "Golf Cart" might need to be recharged to get back home. So I have to save a bit of face as I have tried to explain to him that ICE are soon to be dinosaurs, like it or not.

If I have 50% left when I'm ready to depart, I'll be fine, otherwise I may have to add a few kwhs at my friends and listen to his crap for years to come.