SageBrush
Posts: 2395
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

LEAF 2018 151 Mile Range Mystery

Thu Jan 25, 2018 9:05 pm

The EPA range calculation is IIRC based on 55% city, 45% highway driving.
Since the LEAF 2018 is within 1 MPGe in both city and highway and has the same combined MPGe compared to the 30 kWh Model from 2017,

And the 30 kWh LEAF is rated at 107 miles EPA range,
We should expect the 40 kWh Model to have (4/3)*107 = 142.6 miles of range, yet it is rated for 151 miles.
The extra 8.4 miles is close to 3 kWh.

Anybody know where they are ?
Undisclosed in the new model ?
Missing in the 30 kWh model ?
Last edited by SageBrush on Fri Jan 26, 2018 9:01 am, edited 2 times in total.
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
3/2018: 58 Ahr, 28k miles

powersurge
Posts: 974
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 6:04 am

Sagebrush, you have been around for a while now...

First, you should know about all that EPA "your mileage may vary" crap...

Second, if we calculate numbers based on the Current Leaf, which was rated at 24kwh..... It only has about 21 kwh available.

So the 40kwh battery will logically have only 37 kwh available. So at 4.5miles /kw x 37 kwh = 166.5 miles range (*****up to turtle or 0% battery).

Even if you use a more conservative 4.0 miles /kw x37 kwh miles range, you get 148 miles range. (or 2 miles less than the estimate....) Is that not close enough for you?? :)

IN REALITY.... No one should even be expecting that range, because that number of miles would bring the battery down to turtle mode.... Right?

A more realistic expectation would be getting between 4-4.5 miles per kilowatt. If you use the battery down to a more reasonable 20%, then the following would be reasonable..

40KWH (total battery) - 3kwh (unused overhead) - 37kwh (usable)

37kwh X 80% (true used power, allowing for leaving 20% battery capacity (RESERVE)) = 29.6 KWH used per charge.

So a 40 KWH Leaf would realistically get between :

29.6 kwh x 4.0 miles/kw = 118.4 miles per charge (conservative) to 29.6 kwh X 5.0 miles/ kw = 148 miles range per charge.

I think 4.5 miles/kw is reasonable = 133.2 REALISTIC MILES OF RANGE ON THE 2018 LEAF......

SageBrush
Posts: 2395
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 9:02 am

Woosh
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
3/2018: 58 Ahr, 28k miles

GerryAZ
Gold Member
Posts: 1695
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 10:42 am

EPA numbers for my 2015 are higher than the 2011 even though battery is the same size. Steady speed range is essentially the same (with no battery deterioration) so the actual battery capacity and steady speed efficiency are about the same. Regeneration on the 2015 is more aggressive than the 2011 so real world city driving range is higher for the 2015 and that is reflected in the EPA numbers. Nissan claims even more aggressive regeneration for the 2018 with "single pedal" driving so that likely improves the real world city driving efficiency enough to account for the difference in EPA numbers vs. calculation for increased battery capacity. The new body style might be slightly more aerodynamic, but I have not seen any drag coefficient and frontal area comparisons.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

SageBrush
Posts: 2395
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 11:38 am

Driver experience is irrelevant here.
I just used the EPA MPGe numbers.

Apples to Apples
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
3/2018: 58 Ahr, 28k miles

GerryAZ
Gold Member
Posts: 1695
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 1:19 pm

More aggressive regeneration on 2018 with "single pedal" mode will increase city range which shows up in the EPA numbers.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

alozzy
Posts: 974
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 1:33 pm

I thought the 2018 LEAF has an improved drag coefficient, thought I read that somewhere. If so, that might explain part of it too
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

alozzy
Posts: 974
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 1:37 pm

Just found it...

Cd on 2017 LEAF is .32 Cd

Apparently, the Cd on 2018 LEAF is 0.28

So, range benefit should be somewhat less than (0.32/0.28) or 14%, although at highway speeds, aero drag accounts for most of the total losses.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

SageBrush
Posts: 2395
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 4:23 pm

Folks,
The MPGe are a given from the EPA -- regardless of the hows and whys.
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
3/2018: 58 Ahr, 28k miles

armmynissanleaf
Posts: 90
Joined: Wed Feb 05, 2014 7:27 pm
Delivery Date: 05 Feb 2014

Re: LEAF 2018 151 Mile Range Mystery

Fri Jan 26, 2018 5:15 pm

EPA numbers usually vary.
Always do acts of kindness in this world.
TorqueNews Nissan

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