I Beat EPA's 2.9 Miles/KWh : Report Your Monthly Mileage

[dgpcolorado]

...but only did 4.28 on the dash (up from 4.14) and 3.73 from "wall" problem with that is dash figure includes public charging but dont know efficiency of DCFCs so the wall thing is at best a guess.

I haven't charged away from home since my trip across the mountains in early January, so my wall numbers remain accurate. But the mild, dry March weather made my numbers something of a fluke. I hope that April will be colder and wetter since we need the snow and rain.

I would think it would be hard to estimate DCFC numbers unless the machine gives you a readout. But, as you know, I don't even have any public L2 stations here. As my range decreases with battery degradation I will have to adjust the route for my long trips or use plugs down in town to get back up the hill to my house. I am hopeful that I can get through one more Winter before that happens. Hence, my working on hypermiling and range stretching. Some L2 charge stations here and there sure would be nice; an hour at L2 would keep me able to make my long grocery shopping trips for many more years!

 

[DaveinOlyWA]

AV tells u how much power goes in but not what efficiency it is. So no ac/dc losses to contend with, just heat.

 

[bowthom]

Here are my march numbers.

I had 60 kWh of DCQC in march from my Manzanita trip and some long days of running around town.

MY Regional Rankings (last 12 mo)

May/2012 Platinum 1385 5.4 miles/kWh
Jun/2012 Platinum 1448 5.4 miles/kWh
Jul/2012 Platinum 1011 5.7 miles/kWh
Aug/2012 Platinum 1334 5.6 miles/kWh
Sep/2012 Platinum 1105 5.7 miles/kWh
Oct/2012 Platinum 1798 5.1 miles/kWh
Nov/2012 Gold 4771 4.0 miles/kWh
Dec/2012 Silver 9541 3.2 miles/kWh
Jan/2013 Silver 10147 3.2 miles/kWh
Feb/2013 Silver 7731 3.6 miles/kWh
Mar/2013 Silver 7791 3.9 miles/kWh
Apr/2013 Gold 4493 4.3 miles/kWh

 

[EJensen]

Month : APR-2013
a. 717.7 Miles
b. 168 kWh (Wall - reconditioned electrical meter)
c. 4.27 Miles/kWh (Wall)
d. 4.7 Miles/kWh (Leaf)
e. N/A Miles/kWh (CarWings)
f. $18.48
g. 2.5 Cents/Mile

Charging Voltage: 240

Cost Equivalent mpg: 139*

*The U.S. national weekly averages for a gallon of regular gasoline for the five weeks in April 2013 are $3.645, $3.608, $3.542, $3.536, $3.520, yielding a monthly average of $3.57.
(3.57$/gal) / (.025$/mi.) = 139 mpg (cost equivalent).

 

[N1ghtrider]

May/2012
Gold 2716 4.8 miles/kWh

Jun/2012
Gold 3211 4.7 miles/kWh

Jul/2012
Gold 2591 4.9 miles/kWh

Aug/2012
Gold 4468 4.4 miles/kWh

Sep/2012
Gold 3662 4.6 miles/kWh

Oct/2012
Gold 3085 4.6 miles/kWh

Nov/2012
Platinum 1714 4.8 miles/kWh

Dec/2012
Platinum 1104 4.9 miles/kWh

Jan/2013
Platinum 1363 4.7 miles/kWh

Feb/2013
Platinum 1559 4.8 miles/kWh

Mar/2013
Platinum 2111 4.8 miles/kWh

Apr/2013
Platinum 2934 4.7 miles/kWh

 

[EJensen]

Month : MAY-2013
a. 945.7 Miles
b. 216 kWh (Wall - reconditioned electrical meter)
c. 4.38 Miles/kWh (Wall)
d. 4.8 Miles/kWh (Leaf)
e. N/A Miles/kWh (CarWings)
f. $23.76
g. 2.5 Cents/Mile

Charging Voltage: 240

Cost Equivalent mpg: 144*

*The U.S. national weekly averages for a gallon of regular gasoline for the four weeks in May 2013 are $3.538, $3.603, $3.673, and $3.645, yielding a monthly average of $3.61.
(3.61$/gal) / (.025$/mi.) = 144 mpg (cost equivalent).

 

[dgpcolorado]

May mileage:

Wall-to-wheels: 4.41 miles/kWh

Dash: 4.9 miles/kWh

Charging efficiency was ~90%; my charging efficiency is higher than some get because I rarely charge to 100%, which is less efficient of course.

Notes: No preheating used, so charging efficiency can be calculated. Driving temperatures were mostly 40s, 50s, and 60s with some 70s. Battery temps of four bars at the beginning of the month and five bars later in the month. Elevation range: 8,000 feet to 5750 feet. All driving includes steep hills. No multi-lane highway driving at all. Some of the driving is on dirt roads.

My overall mileage over 10,334 miles is 3.86 miles/kWh, measured from the Wall.

 

[N1ghtrider]

Jun/2012
Gold 3211 4.7 miles/kWh

Jul/2012
Gold 2591 4.9 miles/kWh

Aug/2012
Gold 4468 4.4 miles/kWh

Sep/2012
Gold 3662 4.6 miles/kWh

Oct/2012
Gold 3085 4.6 miles/kWh

Nov/2012
Platinum 1714 4.8 miles/kWh

Dec/2012
Platinum 1104 4.9 miles/kWh

Jan/2013
Platinum 1363 4.7 miles/kWh

Feb/2013
Platinum 1559 4.8 miles/kWh

Mar/2013
Platinum 2111 4.8 miles/kWh

Apr/2013
Platinum 2965 4.7 miles/kWh

May/2013
Platinum 3261 4.8 miles/kWh

 

[evnow]

For May '13 :

728 = Total Miles (from carwings)
160 = kWh used (from the wall)
4.5 = Miles / kWh (a/b from above)
5.3 = CarWings Miles / kWh
17 = $ spent on Electricity for the car
2.4 = Cents / Mile (f/a from above)

5.3 is the highest m/kWh I've got in 27 months of ownership. After the first week of May I changed over to MY13 Leaf. But I also changed my commute since I now work out of a different part of the town - the commute went up from 12 to 20 miles. Not sure what contributed to this sudden increase in m/kWh.

 

[N1ghtrider]

Month and Year

Grade

Rank

Energy Economy



Aug/2012
Gold 4468 4.4 miles/kWh

Sep/2012
Gold 3662 4.6 miles/kWh

Oct/2012
Gold 3085 4.6 miles/kWh

Nov/2012
Platinum 1714 4.8 miles/kWh

Dec/2012
Platinum 1104 4.9 miles/kWh

Jan/2013
Platinum 1363 4.7 miles/kWh

Feb/2013
Platinum 1559 4.8 miles/kWh

Mar/2013
Platinum 2111 4.8 miles/kWh

Apr/2013
Platinum 2965 4.7 miles/kWh

May/2013
Platinum 3261 4.8 miles/kWh

Jun/2013
Gold 4188 4.7 miles/kWh

 

[mathprofcarrie]

First 2 months of carwings data in!

May 2013
1185 miles, 4.0 mi/kWh

June 2013
1067 miles, 4.5 mi/kWh

Less commuter mi in June, more in-town driving. My commuter miles are rural with hills.

 

[edatoakrun]

Update on my reported m/kwh since the end of last year.

Interestingly, the apparent "gauge error" which seems to have increasingly inflated my dash and Carwings m/kWh numbers in previous years, seems to have largely (if not entirely?) stabilized this year.

I should also mention that since May 2013 I have begun using higher tire pressures, up to ~49 psi (except during range tests) as opposed to the ~43 psi for my first two years of LEAF ownership, which I believe may increase my efficiency by ~2% to ~3% overall, in my driving conditions.

Below are my CW monthly averages since delivery, from the “Regional Rankings” page.

While the month–to-month variations are largely explicable by variations in my driving patterns, the overall energy efficiency increase reported over time is not.

As you can see, my average increase in reported efficiency is probably pretty close to 20% year-over-year. In fact, while I drive to the same destinations as I did in 2011, I have altered my driving patterns significantly, but I’m sure all of you realize what it would take to produce an efficiency increase of this magnitude, which IMO, is far greater than can be explained by the changes in my driving patterns.

I believe this further reinforces my range test results, indicating a significant error in my LEAFs m/kWh reports, under-reporting my LEAF’s energy use by up to 10% over the Summer of 2012 as compared to my LEAFs energy use reports over the Summer of 2011, as reported at:

http://www.mynissanleaf.com/viewtopic.php?f=31&t=9064" onclick="window.open(this.href);return false;

In other words, I think it most likely that up to half of the efficiency increase reported below is actually due to “gauge error”.

Month and Year Grade Rank Energy Economy

*Jun/2011 Gold 695 5.7 miles/kWh
*Jul/2011 Gold 1651 5.3 miles/kWh

May, June an July 2011 not comparable, since these are from before I had the CW update done, at the beginning of August, after which CW m/kWh reports match dash reports.*

Aug/2011 Bronze 3622 4.2 miles/kWh
Sep/2011 Silver 3457 4.5 miles/kWh
Oct/2011 Silver 3640 4.2 miles/kWh
Nov/2011 Gold 2792 4.2 miles/kWh
Dec/2011 Gold 2827 4.0 miles/kWh
Jan/2012 Gold 2547 4.2 miles/kWh
Feb/2012 Gold 2354 4.4 miles/kWh
Mar/2012 Gold 2975 4.3 miles/kWh
Apr/2012 Gold 3018 4.5 miles/kWh
May/2012 Gold 1978 5.1 miles/kWh


MY LEAFs TCU failed in early August 2012, before I copied June and July results, which Nissan later sent to my in an excel file:

June 2012 5.0 m/kWh
July 2012 5.0 m/kWh

And since then, CW reports have resumed, giving the following results::

Aug/2012 Platinum 1237 5.7 miles/kWh
Sep/2012 Platinum 1527 5.5 miles/kWh
Oct/2012 Platinum 1368 5.3 miles/kWh
Nov/2012 Platinum 1996 4.7 miles/kWh
Dec/2012 Platinum 1314 4.8 miles/kWh

Jan/2013 Platinum 1240 4.8 miles/kWh
Feb/2013 Platinum 875 5.2 miles/kWh
Mar/2013 Platinum 928 5.5 miles/kWh
Apr/2013 Platinum 1229 5.5 miles/kWh
May/2013 Platinum 1190 5.7 miles/kWh
Jun/2013 Platinum 1557 5.5 miles/kWh
Jul/2013 Platinum 928 5.9 miles/kWh (to date)

 

[dgpcolorado]

August mileage:

Wall-to-wheels: 4.47 miles/kWh

Dash: 5.1 miles/kWh

Charging efficiency was ~88%; my charging efficiency is a bit higher than some get because I don't charge to 100% very often.

Notes: No preheating used, so charging efficiency can be calculated. Driving temperatures were mostly 50s, 60s, 70s and some 80s. Some driving in rain lowered efficiency. Battery temps of five bars with occasional six bars. Elevation range: 8,000 feet to 5750 feet. All driving includes steep hills. No multi-lane highway driving at all. Some of the driving is on dirt roads.

My overall mileage over 12703 miles is 3.98 miles/kWh, measured from the Wall.

 

[Klayfish]

What do you mean "from the wall"?

August was my first month with the Leaf. I averaged 4.5 per the dash reading. Not bad for a complete rookie.

 

[DaveinOlyWA]

What do you mean "from the wall"?

August was my first month with the Leaf. I averaged 4.5 per the dash reading. Not bad for a complete rookie.

there are conversion losses so the "from the wall" power usage will be higher.

generally speaking if using 240 volt, 16 amps you will be charging at about 87-90% efficiency (reports vary) if charging 240 volt, 12 amps (rare i know but i qualify!) it will be about 84-85% and if doing the standard 120 volt 12 amp, its going to be 75-76%

one reason (besides heat loss from conversion which is pretty small) is BMS over head. water pumps circulating water to cool inverter and whatnot is pretty static thru all charging rates so the longer it takes to charge, the greater the amount of power used to run the various BMS functions

 

[Boourns]

Got my leaf on Aug. 28th, so this is the last few days of August:

115.4 miles @ 4.3 miles/kWh

 

[N1ghtrider]

Your rank for the past 12 months


Month and Year

Grade

Rank

Energy Economy



Aug/2013
Gold 6896 4.4 miles/kWh

Sep/2013
Gold 6783 4.4 miles/kWh

Oct/2013
Gold 6419 4.3 miles/kWh

Nov/2013
Platinum 3739 4.4 miles/kWh

Dec/2013
Platinum 1470 4.7 miles/kWh

 

[mark1313]

I just wanted to update my 2011 Leaf ....32 months old....32000 miles...2nd battery pack....6.2M/KWH .....Runs great.......

 

[DaveinOlyWA]

I just wanted to update my 2011 Leaf ....32 months old....32000 miles...2nd battery pack....6.2M/KWH .....Runs great.......

Mark; so glad to hear about a AZ'er who is happy with their LEAF. how many miles on the new pack? any stats on it like ahr or Hx available?

 

[Boourns]

Here are my updates. September was my first full month with the Leaf.

September
Distance Traveled: 994 miles
Average Energy Economy: 4.8 miles/kWh
Electricity Consumption: 204.8 kWh

October
Distance Traveled: 1004 miles
Average Energy Economy: 5.2 miles/kWh
Electricity Consumption: 193.8 kWh

November
Distance Traveled: 720 miles
Average Energy Economy: 4.9 miles/kWh
Electricity Consumption: 147 kWh

December
Distance Traveled: 650.9 miles
Average Energy Economy: 4.7 miles/kWh
Electricity Consumption: 138.4 kWh

January (halfway through)
Distance Traveled: 338 miles
Average Energy Economy: 4.8 miles/kWh
Electricity Consumption: 70.2 kWh