eNate
Posts: 281
Joined: Mon Sep 09, 2019 5:33 pm

2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Mon Sep 09, 2019 5:43 pm

A 2017 BEV with 94 Ah battery that I'm looking at surprised me! When I powered it up this morning for a test drive, with the display indicating a full charge, it indicated only 98 miles of range.

Is this cause for concern? Does the car's computer calculate this based on how it's been driven lately (lead-footed dealership test rides?) What's "normal" for displayed range with a full charge?
2 0 1 7   B M W   i 3   9 4 A h   B E V  O a k l a n d
 Wokeby Trunk Extension | Duosida 16A L1 EVSE
 SeaSucker Monkey Bar Roof Rack

alohart
Posts: 1920
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Mon Sep 09, 2019 6:11 pm

Yes, the range "guess-o-meter" uses the past 18 or so miles of driving to predict the range assuming that the driving conditions will be identical. If you could arrange an extended test drive driving it like you would normally do, the range estimate should become more accurate for your driving.

The EPA rated range is 114 miles. Many feel that this rating is very conservative because it's apparently not difficult to exceed this range.
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

eNate
Posts: 281
Joined: Mon Sep 09, 2019 5:33 pm

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Mon Sep 09, 2019 6:31 pm

Ha! Funny you should suggest that.

I thought I had talked the salesman in to letting me take the car home for the night, charge at work, drive the kids in the morning, and get a real flavor of the i3 over 100 miles.

But then his manager got involved and wanted me to sign a voidable sales contract and apply for financing, and I just wasn't ready for the commitment -- or hampering my ability to negotiate the price.
2 0 1 7   B M W   i 3   9 4 A h   B E V  O a k l a n d
 Wokeby Trunk Extension | Duosida 16A L1 EVSE
 SeaSucker Monkey Bar Roof Rack

robthebold
Posts: 93
Joined: Sat May 11, 2019 5:09 pm

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Tue Sep 10, 2019 8:25 am

It's still warm here, but if it's cold where you are that kind of range isn't ridiculous, especially if you haven't preconditioned the car.

jadnashuanh
Posts: 4788
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Tue Sep 10, 2019 5:33 pm

One thing most people do when checking out an EV is to goose it as much and as often as they can. Now, driving any car like that will take a big toll on efficiency, gas or electric. So, without knowing how it was driven, any range displayed will be an extrapolation of what went before.

On the display, you can switch one of the readouts to indicate your average or current efficiency. You can reset it, and see how it goes forward. The community average efficiency is around 4-miles/Kw discharge. You can get a fairly good idea of how far you can go by monitoring that.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

JohnKelly
Posts: 84
Joined: Sat Oct 07, 2017 7:02 am

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Wed Sep 11, 2019 7:15 am

Make sure the 2017 actually has the larger capacity battery. I think some of them did not ?
2015 REX / Participating on plugshare w/level 2 Clipper Creek 32 amp, Moclips, Washington coast

eNate
Posts: 281
Joined: Mon Sep 09, 2019 5:33 pm

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Thu Sep 12, 2019 12:45 pm

Thanks, good suggestion. The VIN decoder I'm using says it's a 94 Ah battery.
2 0 1 7   B M W   i 3   9 4 A h   B E V  O a k l a n d
 Wokeby Trunk Extension | Duosida 16A L1 EVSE
 SeaSucker Monkey Bar Roof Rack

JohnKelly
Posts: 84
Joined: Sat Oct 07, 2017 7:02 am

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Thu Sep 12, 2019 1:14 pm

Sounds like you need an extended test drive to reset the guese-o-meter.
2015 REX / Participating on plugshare w/level 2 Clipper Creek 32 amp, Moclips, Washington coast

eNate
Posts: 281
Joined: Mon Sep 09, 2019 5:33 pm

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Tue Sep 17, 2019 8:16 am

I went through with the purchase. My mi/kw was stuck around 3.4. After resetting the trip meter, getting some charges on it, and driving it for a few days, I'm up to 4.0 mi/kw and my battery's range is penciling out to 130 miles. So all good! Yay!
Last edited by eNate on Tue Sep 17, 2019 7:00 pm, edited 2 times in total.
2 0 1 7   B M W   i 3   9 4 A h   B E V  O a k l a n d
 Wokeby Trunk Extension | Duosida 16A L1 EVSE
 SeaSucker Monkey Bar Roof Rack

jadnashuanh
Posts: 4788
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: 2017 94 Ah CPO: 98 miles range displayed w/ full charge?

Tue Sep 17, 2019 1:37 pm

4.0 seems to be the community average. It takes a different mindset to achieve much more than that, but it's possible. You'll find high speed is your worst enemy as the drag goes up radically with speed. Unlike a car that usually enriches the mixture during hard acceleration, it isn't as much a factor with an EV. But, not keeping a steady speed and using the brake a lot versus mainly one-pedal driving does make a major hit in efficiency. Well, that's true for an ICE, too, but when your range isn't great in the first place, you notice it more. If you have the active cruise control, that helps, too.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

Return to “Buying the BMW i3”