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Re: 62kwh Leaf Plus Efficiency Posting

Posted: Mon Sep 02, 2019 6:18 am
by DaveinOlyWA
Off Topic Note; I have a spreadsheet where I have recorded my expenses and charging. I using a formula with fast charging efficiency at 96%, L 2 efficiency at 89% (5.8 KW) A few months ago, I got a meter that I put on the EVSE outlet and there is a growing discrepancy that suggests my L2 efficiency is higher than the 89% I am tracking. This would be a change from previous LEAFs as the 89% was derived from values when I had the utility grade meter hooked up. I took the meter out due to space issues but now am contemplating putting it back in to verify the accuracy of the meter I added.

I am now going back thru my data entries to check for any discrepancies that might have caused this?

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Mon Sep 02, 2019 8:54 am
by DougWantsALeaf
That would be interesting if true.

I do know that even on the 110, the car reports 1.4kW charging where I swear the 2013 Leaf charged at 1.2

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Mon Sep 02, 2019 10:18 am
by umdkevin
August:

4.5 Miles/kWh
904 miles (855 logged by NissanConnect, still seems to be a bug)

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Mon Sep 02, 2019 3:11 pm
by Astros
My wife and I must drive much faster than most people posting here, because we average a solid 3.7 miles/kWh with our SL Plus on the freeway. For comparison, with our previous-generation Leafs we averaged 3.8 miles/kWh with a 2018 SV, and 3.9 miles/kWh with a 2017 SV. Almost all of our driving is on the freeway, and we try to stay with the flow of traffic with ProPilot on, so ~65-70 mph.

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Mon Sep 02, 2019 5:04 pm
by NotATesla
I can say that we drive about the same speed for most of our trips but we do not use the ProPilot feature(set the cruise control).

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Mon Sep 02, 2019 8:11 pm
by DougWantsALeaf
Same here. On the highway I only use propilot to eat/drink so I can take my hands off the wheel for spells. Else I don’t think I get quite the efficiency, and manual as you can prevent unnecessary regen and smooth the power draw a bit.

If you have the SV or SL keep the tires at 44 psi (max as permitted on sidewall).

Stay with packs of cars to limit drag a bit as the leaf is a bit chunkier then the 3 or Ionic.

Keep air on Auto as it lowers the draw on the battery.

Use Eco mode.

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Tue Sep 03, 2019 6:35 am
by DaveinOlyWA
DougWantsALeaf wrote:
Mon Sep 02, 2019 8:11 pm
Same here. On the highway I only use propilot to eat/drink so I can take my hands off the wheel for spells. Else I don’t think I get quite the efficiency, and manual as you can prevent unnecessary regen and smooth the power draw a bit.

If you have the SV or SL keep the tires at 44 psi (max as permitted on sidewall).

Stay with packs of cars to limit drag a bit as the leaf is a bit chunkier then the 3 or Ionic.

Keep air on Auto as it lowers the draw on the battery.

Use Eco mode.
Yeah, that doesn't work. Unless you are within a few feet of the car in front of you, you are actually hurting your efficiency. Cars ahead of you create turbulence that hurts you. Depending on the size of the car in front of you, the "bad" zone is 10-30 feet behind them so you are much better off increasing your following distance.

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Tue Sep 03, 2019 12:09 pm
by NotATesla
DaveinOlyWA wrote:
Tue Sep 03, 2019 6:35 am
DougWantsALeaf wrote:
Mon Sep 02, 2019 8:11 pm
Same here. On the highway I only use propilot to eat/drink so I can take my hands off the wheel for spells. Else I don’t think I get quite the efficiency, and manual as you can prevent unnecessary regen and smooth the power draw a bit.

If you have the SV or SL keep the tires at 44 psi (max as permitted on sidewall).

Stay with packs of cars to limit drag a bit as the leaf is a bit chunkier then the 3 or Ionic.

Keep air on Auto as it lowers the draw on the battery.

Use Eco mode.
Yeah, that doesn't work. Unless you are within a few feet of the car in front of you, you are actually hurting your efficiency. Cars ahead of you create turbulence that hurts you. Depending on the size of the car in front of you, the "bad" zone is 10-30 feet behind them so you are much better off increasing your following distance.
I'm sure we can find articles and information to support either side of this debate. As an example, this https://www.treehugger.com/cars/draftin ... -work.html article suggests following a semi at 100 feet would gain you some improved efficiency. I know someone shared an article earlier that proposed using the cruise control with three lines distance set to save on energy as well. Although I wouldn't recommend that because drivers can be rather erratic in their driving, and I would instead suggest maintaining a safe distance yourself.

I often see articles that claim cruise control is better for fuel efficiency but I believe they're making quite a few assumptions on the terrain, drivers around you, traffic, etc that are likely more "ideal" than "realistic" in my opinion.

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Tue Sep 03, 2019 12:21 pm
by LeftieBiker
Keep air on Auto as it lowers the draw on the battery.
You mean the climate control? No, the Auto setting blasts the blower to get the cabin temp to the set temperature, and that power comes, indirectly, from the pack.

Re: 62kwh Leaf Plus Efficiency Posting

Posted: Tue Sep 03, 2019 2:21 pm
by DougWantsALeaf
Leftiebiker

Admittedly my comment is experience based not scientific, but it does seem if I am with a group of cars (say 10) across both lanes, at 3 bars of distance (which feels safe at 65mph) there feels to be an incremental improvement in efficiency. A couple tenths of a mile or so. If thick’s are part of the group, it certainly helps more. Again, no hard science in those statements.

As for auto setting, I usually keep my AC and 76-77F so the fan hardly runs after initial cooling,
Even on hot days. What it does do is keep the humidity out of the air (at temp equilibrium only using 1 or 2 bars of power on the power usage center screen). That bit makes it quite comfortable. If you leave it off of auto, the fan will run at a constant higher speed, driving up AC power usage, and ultimately use more power. It could be different if you keep the ac at 68, which for me is too cold.

As always, I appreciate the dialogue