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

Posted: Fri Oct 31, 2014 8:18 pm
by nerys
I think the economy meter in the car is a bunch of hogwash it keeps telling me I'm averaging five plus miles per kilowatt but when I calculate based on kilowatts left from 18.5 starting and miles used I usually end up around 4.5 to 4.7 max.

I could be off since I don't have too much opportunity to test this as I do a lot of opportunistic charging and it's very difficult to get an accurate reading of how many kilowatts I'm putting in verse taking out.

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

Posted: Sat Nov 01, 2014 11:08 am
by DaveinOlyWA
nerys wrote:I think the economy meter in the car is a bunch of hogwash it keeps telling me I'm averaging five plus miles per kilowatt but when I calculate based on kilowatts left from 18.5 starting and miles used I usually end up around 4.5 to 4.7 max.

I could be off since I don't have too much opportunity to test this as I do a lot of opportunistic charging and it's very difficult to get an accurate reading of how many kilowatts I'm putting in verse taking out.


yep, get the same error which leads me to thinking the dash ONLY considers what the motor is using to get you down the road and accessories are not included. now, I tried to test this but to be honest with ya, no discernible data to report other than to say that climate controls DO affect the miles/kwh number so not as cut and dried as I hoped it would be.

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

Posted: Sat Nov 08, 2014 7:56 am
by DougWantsALeaf
I tend to find it accurate if you are on a continuous trip without a lot of stopping and starting.

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

Posted: Sun Dec 28, 2014 6:59 pm
by Moof
nerys wrote:I think the economy meter in the car is a bunch of hogwash it keeps telling me I'm averaging five plus miles per kilowatt but when I calculate based on kilowatts left from 18.5 starting and miles used I usually end up around 4.5 to 4.7 max.

I could be off since I don't have too much opportunity to test this as I do a lot of opportunistic charging and it's very difficult to get an accurate reading of how many kilowatts I'm putting in verse taking out.

I get the impression that Nissan is mathematically challenged. From 100-80% or so I find the dash efficiency is optimistic, like they are trying to fudge for the reduced regen to avoid complaints or something. Carwings disagrees with the dash, the GOM deserves a darwin award, non-linear charge and capacity bars, regen circles that are often telling a different story than the Energy Usage pie chart, and bizarro efficiency reading. Honestly I think they took every number and ran it through a filter to make a cartoonish caricature of the reading to show to the driver.

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

Posted: Mon Dec 29, 2014 12:43 am
by nerys
it does in fact seem like that.

and when the battery is low is "runs out" faster than reality and then if you keep going it slows down and "catches up" with itself (so it might say 6 miles left you go 2 miles and it still says 6 miles left)

I wish it would just give me a solid linear reliable value.

if pushing it I just use leaf spyi and use kwh remaining as my guide (just remember 0 is .5kwh NOT 0kwh !! the battery will hard disconnect at around .5kwh :-)

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

Posted: Mon Dec 29, 2014 6:12 am
by minispeed
nerys wrote:it does in fact seem like that.

and when the battery is low is "runs out" faster than reality and then if you keep going it slows down and "catches up" with itself (so it might say 6 miles left you go 2 miles and it still says 6 miles left)

I wish it would just give me a solid linear reliable value.

if pushing it I just use leaf spyi and use kwh remaining as my guide (just remember 0 is .5kwh NOT 0kwh !! the battery will hard disconnect at around .5kwh :-)


The GOM run down "catches up" is probably due in part to the natural intelligent user response to being so low, driving better. A big part of this is forced on Nissan by our society that demands money back on major car investments for little things that bother them and the fear of being stranded. No one is going to sue Nissan for a car that their program said could do 6 miles but actually went 8 but they will sue and ask for a full refund on a now used car when it said 8 and went 7.5 and claim that Nissan endangered their family by leaving them on the side of the road .5 miles from where they thought they could go. Also the GOM especially at those low numbers is designed to make you search for a charging spot within the range given, it has to be extra cautious because even a short hill at a low battery SOC can make the difference between getting there and not. At full range a hill can never go on for 84 miles so they can make the assumption based on a tighter avg consumption.

It would be impossible to give a solid linear reliable value since no human can drive that way, no wind will ever blow that way and no road will ever be level in that way. I personally like the way the spark ev does it with a high/low and current use GOM and future cars should be programed with topographical information to give more accurate GOM when a destination is put in the GPS. I've heard the BMW active hybrid will do this when in cruise control to calculate if the electric assist should be boosted to maintain speed up a hill or give it more gas and or downshift.

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

Posted: Thu Jan 01, 2015 2:51 pm
by mark133
Just a update 6.3 M/KWH ..... Im on my 2nd battery now ....

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

Posted: Thu Jan 01, 2015 6:44 pm
by N1ghtrider
For December I had 4.5 m/KWh over 1,123 miles and completed 2014 with 4.5 m/KWh over 11,576 miles.

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

Posted: Fri Feb 20, 2015 6:51 pm
by Brenthasty
4.6 m/kwh @ 62 mph in my aeromodded leaf.

See my other thread describing the grille block, solid disc hubcaps, and tire cheek aero deflectors.

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

Posted: Fri Feb 20, 2015 6:52 pm
by Brenthasty
4.6 m/kwh @ 62 mph in my aeromodded leaf.

See my other thread describing the grille block, solid disc hubcaps, and tire cheek aero deflectors.