Energy efficiency

[Jiji]

I agree. Thanks for helping clarify. And typically it is around 10%.

Just recorded an L2 charge tonight and was just under 90% efficient (kWh delivered to the battery divided by the kWh measured at the MME plug).

Sponsored

 

[mkhuffman]

Because we are discussing this, I decided to check through my EV driving history logs over the past week or so. Only one looks incorrect, which really surprises me. I literally have not looked at this data for months and now it looks pretty good. I wonder if one of the OTAs finally addressed the issue? I seriously doubt that, but it does seem better.

Of course now it will all go to crap...

 

[Larry Paul]

I have been running an experiment with my 2022 Mach E GT Performance since I got it in May of 2022. I have been driving on pure battery power since January 1999 when we leased (not allowed to purchase) a Honda EV Plus that we ordered in October 1998. We still drive our 20+ year old 2002 Rav4EV that we purchased new. It has batteries built in 2002, but it is not our original pack. We have driven over 350K miles on battery power since January 1999 on 6 pure BEV's and two EREV's (both Chevy Volts).

I have been experimenting with our Mach E GTPE since we got it by keeping a log of every mile and every recharge. It is a bit nuts (ok it is crazy) but I have kept this up since we drove it off the lot. I used to log every gas station visit (I recorded every tank of gas in our 2013 Volt that we sold a few months back, but did not record charging or miles driven every time), but never had the ability to do so on an EV directly even though 7 of the 8 cars we have owned since they were new.

I live in a very mild climate portion of greater LA area. I love performance and muscle cars and have owned cars that I have drag and road raced (still have one), but for day to day commuting life I am typically a mellow driver (and so is my wife). Many trips are local on city streets and I am am forced also to drive in horrible LA traffic often with only occasional spirited driving that the Mach E does so very well. While I have noted some drivers have smoked their Pirelli P Zero summer tires in less than 4000 miles, my original tires are only showing around 2/32nds of wear in the first 12.4K miles (still have about 6/32nds showing).

I use FordPass to record miles and charging-at least when it works. As of yesterday, I have recorded exactly 1000 individual trips. It works often, but as others have reported, at times it fails one way or another.

Of those 1000 trips 97 times it failed to stop recording the previous drive, but I have figured out how to extract the correct information by subtracting the miles from the previous.

27 times the car has simply failed to record a driving event at all. That usually takes a bit more sleuthing to estimate what the car failed to log. I use a combination of maps.google.com and historical data to figure out miles driven. I then use charging history to reverse estimate kWh used along with recalling how I was driving or if I have driven the same path before (like home to office) on similar weather and driving route taken.

I have charged the vehicle 268 times. 9 of those failed to record or record correctly in FordPass. I typically use my Tesla Powerwall app to see when the car started to charge and when it ended and at what rate.

I am very confident that I have fairly accurately captured every mile driven and every charge event. (yes, I know it is nuts).

With my years of driving EV's, mild weather and mostly mellow driving (and yes occasionally spirited driving) my Mach E while it is easily the least efficient EV we have owned (the most being our 2002 Rav4EV or our 2017 Chevy Bolt EV/2023 Bolt EV being the best).

If I average the data from the Ford Pass App, my Mach E has averaged 3.5 Miles/kWh (3.498). If I use the data and look at miles driven and divide it by kWh reportedly used the calculation is 3.6 (3.578) mi/kWh. When I go on actual freeway driving at speed I typically get 2.9-3.2m/kWh so clearly most of my driving is not at speed. So when I take the freeway for daily use-it is often not at 65+ MPH constant freeway speeds.

I know that this is way outside the average persons experience with most MMEs let alone a GTPE. This does NOT include the roughly 10% losses that occur with the EVSE and other losses in the recharge process, however, I am confident that this is accurate for my car based on looking at both my experience and with looking at kWh draw reporting based on my Powerwalls.

 

[RickMachE]

I am also in upstate NY and here are some real efficiency values for the past week on my wife's MME GT, I would expect your results to be similar:

Your efficiencies should be around 3.3-3.5 mi/kWh in summer and perhaps 2.4-2.7 mi/kWh in the winter, less if colder or if driving on wet roads or in slush. Here are my efficiencies over the past year (the darker bars have more miles than the lighter bars):

Try the trip odometer in the vehicle for better results but even it is flawed as it often combines multiple trips into one. But at least it gets the efficiency right.

Is this the Apple app? The Android app doesn't provide this level of detail.

 

[RickMachE]

Just recorded an L2 charge tonight and was just under 90% efficient (kWh delivered to the battery divided by the kWh measured at the MME plug).

What app is this?

 

[RickMachE]

Because we are discussing this, I decided to check through my EV driving history logs over the past week or so. Only one looks incorrect, which really surprises me. I literally have not looked at this data for months and now it looks pretty good. I wonder if one of the OTAs finally addressed the issue? I seriously doubt that, but it does seem better.

Of course now it will all go to crap...

Your conclusions are flawed. Rest assured the data is still fubar. On Monday, May 29th, I took a 13.5 mile trip and used 0.2kWh, for an efficiency of 90.3mi/kWh. Yea, me!

 

[Jiji]

Is this the Apple app? The Android app doesn't provide this level of detail.

https://www.macheforum.com/site/thr...viewing-mach-e-trips-and-charging-data.26711/

 

[Larry Paul]

Your conclusions are flawed. Rest assured the data is still fubar. On Monday, May 29th, I took a 13.5 mile trip and used 0.2kWh, for an efficiency of 90.3mi/kWh. Yea, me!

having captured 1000 driving events in the last 12445 miles, 12 months and a couple of weeks I know when there is FUBAR and real data and usually how to convert the FUBAR to accurate data.

 

[RickMachE]

having captured 1000 driving events in the last 12445 miles, 12 months and a couple of weeks I know when there is FUBAR and real data and usually how to convert the FUBAR to accurate data.

My comment wasn't directed at your analysis, it was at the statement that maybe the Ford EV data was accurate now, after an update.

 

[Larry Paul]

My comment wasn't directed at your analysis, it was at the statement that maybe the Ford EV data was accurate now, after an update.

Fully understood...I did not think it was. I was just adding additional comments... Ford Pass can provide some serious FUBAR.

 

[mkhuffman]

My comment wasn't directed at your analysis, it was at the statement that maybe the Ford EV data was accurate now, after an update.

You dashed my hopes and dreams. It was almost like you enjoyed it. Now I will cry myself to sleep.

 

[JSeis]

Perpetual motion, who’d thunk!

 

[Rafka70]

I think I beat the record of efficiency

 

[mkhuffman]

I think I beat the record of efficiency

Puff the Magic Dragon

 

[aKaClamp]

Why did Ford remove the trip log feature?

Sponsored