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      08-24-2015, 06:47 PM   #45
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Amazing. We spend 100K plus on a sports car but worry if it only shows 13 miles in e drive

But I totally get it

We need help
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      08-24-2015, 07:54 PM   #46
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Quote:
Originally Posted by Baron UK View Post
Amazing. We spend 100K plus on a sports car but worry if it only shows 13 miles in e drive

But I totally get it

We need help
Hey I bought this car solely to save money! If I can drive 20 miles every day in all electric I can save $2 per day, and the car will pay for itself in 75,000 days. I am investing into the future, taking the long view. Yeah!

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      08-24-2015, 08:16 PM   #47
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Quote:
Originally Posted by Baron UK View Post
Amazing. We spend 100K plus on a sports car but worry if it only shows 13 miles in e drive

But I totally get it

We need help
Must you bring us back to reality?!!?!
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      08-25-2015, 03:18 PM   #48
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Originally Posted by MalibuBimmer View Post
Drive it to learn your actual range. I once got my car to say that my range was 29 miles on electric. In actuality I got about 16. (I coasted a lot of hills to get the displayed range that high.)
Ok...I took the M6 out this morning to the coffee shop for a proper thrashing and returned to get the i8 for my lunch appointment and decided to have a proper measurement of my purely electric range. Here are the results:

I did not precondition. Garage Temp, 78F. Ambient Temp 85F. I unplugged from the umbilical and started the car. At this point the range was 15 miles.

I backed out of the garage, down the driveway, and onto the street. A total distance of 75 feet. I engaged drive and immediately went to eco-mode.

I drove off at a reasonable pace keeping the power level at 60%-70% of available eco-mode power. To make a long story short, in mixed driving with about 65% on the interstate and never over 74 mph as well as judicious use of the accelerator, I achieved 23 miles when the range meter hit zero. This included regeneration from coasting and braking but the ICE was not started. I drove another 100 meters to a fuel station and filled the car in order to get a good reading from the App.

More Data: 4.1kW/H/mi expended for the 23 mile drive.

I will take this any day of the week!!!

For those who have done this, please share your methodology for the measurement. I would be extremely interested in developing a consistent methodology.

Great Job BMW!!

Last edited by MKSixer; 08-25-2015 at 03:49 PM..
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      08-26-2015, 04:29 PM   #49
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Originally Posted by Epirali View Post
It takes a little bit of time to learn the "tricks" of optimize the range. What you will learn in truth is how much driving style and speeds impact efficiency, except in a gasoline car you can mostly ignore it and feel back up.

Once you realize how to drive very efficiently using all the information and the "stress" of EVs then you find same techniques apply to ICE vehicles to.
That's the ticket! If our "old" normal cars only held a gallon of gas, we would have learned to drive carefully and stretch that out a long time ago. But with 15 gallons in the tank, you just worry less. Just like we wouldn't be having this discussion here if we had 15 i8 batteries installed - without the added weight.
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      08-26-2015, 08:21 PM   #50
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Quote:
Originally Posted by MKSixer View Post
Ok...I took the M6 out this morning to the coffee shop for a proper thrashing and returned to get the i8 for my lunch appointment and decided to have a proper measurement of my purely electric range. Here are the results:

I did not precondition. Garage Temp, 78F. Ambient Temp 85F. I unplugged from the umbilical and started the car. At this point the range was 15 miles.

I backed out of the garage, down the driveway, and onto the street. A total distance of 75 feet. I engaged drive and immediately went to eco-mode.

I drove off at a reasonable pace keeping the power level at 60%-70% of available eco-mode power. To make a long story short, in mixed driving with about 65% on the interstate and never over 74 mph as well as judicious use of the accelerator, I achieved 23 miles when the range meter hit zero. This included regeneration from coasting and braking but the ICE was not started. I drove another 100 meters to a fuel station and filled the car in order to get a good reading from the App.

More Data: 4.1kW/H/mi expended for the 23 mile drive.

I will take this any day of the week!!!

For those who have done this, please share your methodology for the measurement. I would be extremely interested in developing a consistent methodology.

Great Job BMW!!
23 miles Amazing. Is this the best recorded so far ?
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      08-26-2015, 08:48 PM   #51
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Quote:
Originally Posted by Baron UK View Post
23 miles Amazing. Is this the best recorded so far ?
I'm not certain but I am really pleased about the performance. It is much better than I expected based on the EPA rating and anecdotal information in the press.
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      08-27-2015, 04:19 AM   #52
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Originally Posted by Baron UK View Post
23 miles Amazing. Is this the best recorded so far ?
I think pretty much, yes. I've done 37km, which is also 23mi (post #28 in this thread). That's the most I could get so far - on a flat run, not benefitting from an overall drop in elevation or anything (actually, it's a net climb of 5m )
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      08-27-2015, 07:37 AM   #53
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Originally Posted by Aye-eight View Post
I think pretty much, yes. I've done 37km, which is also 23mi (post #28 in this thread). That's the most I could get so far - on a flat run, not benefitting from an overall drop in elevation or anything (actually, it's a net climb of 5m )
The net climb of 5 miles is impressive. The only climb I have is the interstate on-ramp!
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      08-28-2015, 06:23 AM   #54
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Originally Posted by MKSixer View Post
The net climb of 5 miles is impressive. The only climb I have is the interstate on-ramp!
Sorry, I meant 5 meters. At 5 miles in altitude gain, I would have parked the car on Mt. Everest. That would have been one hell of a publicity stunt ...

Did another 37 km / 23 mile run yesterday. It's starting to be the norm if I go home late enough and take the back roads.
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      08-28-2015, 07:41 AM   #55
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Lol.
A slow spiraling climb to the heavens!
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      08-28-2015, 04:57 PM   #56
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39+ km / 24.5 mi! Did BMW even promise that?
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      08-28-2015, 05:39 PM   #57
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Originally Posted by Aye-eight View Post
39+ km / 24.5 mi! Did BMW even promise that?
Out-STANDING!!!

Nicely done!!
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      09-23-2015, 04:56 PM   #58
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My car seems to have moods. E-motions?

I have done the same run where I managed 39 km (see above) a number of times. I always charge up the same way - 16A 220V fully charged, no precon. I always drive home the same way. Sometimes traffic doesn't let me cruise perfectly; I get that.

But still - for instance today: same drive, fairly empty roads, no adverse weather conditions like headwind, no a/c, .... I tried to drive just as carefully. But I had a hard time getting under 19 kWh/100km on average, compared to the 13.something above.

I've observed these fluctuations for a few days now. Not sure if it can be outside temperature. It hasn't changed that much.

Any ideas?
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