Mileage decrease?

[WattPony]

Rather new MME owner. 2600 miles since getting my charcoal 2022 MME Premium RWD on Aug 18.

I live near Savannah GA so it's not cold here, was 61 this morning.

Since the weekend I've seemingly lost range. 100% is now about 275 and not 306 on the GOM. I only charged to 100% 2 times, all the rest to 85 or 90% All level 2 charging, at home.

Is 61 degrees really where we see drop off? Granted, it's been 90+ since I bought the car. Usually I get 3-4 miles per KWH. I use one pedal driving all the time.

Didn't seem right to me.

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[MacherAWD]

Rather new MME owner. 2600 miles since getting my charcoal 2022 MME Premium RWD on Aug 18.

I live near Savannah GA so it's not cold here, was 61 this morning.

Since the weekend I've seemingly lost range. 100% is now about 275 and not 306 on the GOM. I only charged to 100% 2 times, all the rest to 85 or 90% All level 2 charging, at home.

Is 61 degrees really where we see drop off? Granted, it's been 90+ since I bought the car. Usually I get 3-4 miles per KWH. I use one pedal driving all the time.

Didn't seem right to me.

I notice it too, I think the car is assuming you are always using climate control, so heat in that case. I have EA with intelligent range and notice this, but then because I am not using my heat, seats and wheels instead I end up going the normal distance on my charge.

 

[breeves002]

Copy paste from mach_lee. Partially or fully applies to your question. Literally 50+ threads on this subject. When it has been 90+ yes, 60ºF is considered "cold" even though its not truly cold. It does make a difference but theres so many factors. Just read below it usually answers these questions.

Hello, it looks like you are new and might be complaining about your cold-weather range decrease without having referenced the numerous threads on this subject. Due to high volume of questions, this is a pre-written response to help alleviate your concerns. Remember to use the search function before creating a new thread, as forum members are fatigued with new users asking this same question over and over again almost daily.

TL;DR - Range decreases due to cold weather, the range display is a highly pessimistic guess not to be taken literally, and you might update your software if you want to see a higher number.

First, understand that some range loss in cold weather is normal due to the laws of physics. Chemical reactions in the battery are more sluggish, the air is more dense to push through causing more drag, and your heater takes more electricity to run than A/C. The colder it is, the less your range will be because of these factors.

Second, know that the range you see on your display is just a guess. It can be off 40% or more from reality on some software versions. Do not take the number literally or you will be upset, nothing is wrong with your car, it is not the true range. Unlike other brands like Tesla, Ford has made the reading extremely conservative and sensitive to cold temperatures on purpose, so that you don’t strand yourself in cold weather. Expect a sharp decrease in the reading below about 50ºF/10ºC that is greater than reality.

You can calculate your actual range yourself by simply noting the battery percentage before and after a trip greater than 20 miles. For example, if a 25 mile trip took 12% battery, 25/.12 = 208 mile range at full charge. Another method is to multiply your mi/kWh efficiency by your battery capacity, either 88 kWh for extended range or 68 kWh for standard range. For example, if you are getting 2.6 mi/kWh in an extended range, 2.6*88 = 229 miles of range. Please note that in cold weather, the actual capacity of the pack will temporarily decrease some, so 80/62 kWh may be a better capacity figure to use for an estimate in cold weather. Full capacity will return next summer with warmer temps.

The amount of actual range loss may vary due to many factors, but to provide a generic reference, a loss of 35% at 20ºF/-7ºC would be typical in average driving. This would equate to a range of approximately 176 mi / 137 mi for extended/standard packs. The percentage range drop compared to summer is also inversely proportional to the speed you drive due to the heater’s percentage of total energy use. If you drive in a city you may see a 40% drop in range, vs. a 25% drop driving on the interstate.

In summary, remember the range display is always a pessimistic guess, and your actual range will be greater than indicated. Parking in a garage, plugging in, and using departure times will help keep the battery warm and increase your actual range. Enjoy driving your electric car after gaining an understanding of normal cold weather range loss and the pessimistic guessing of the range display, affectionally called the GOM (Guess-O-Meter).

 

[summerlinLV]

This has been discussed on many threads. I just considered it the same as an ICE vehicle. When I fill the tank on my previous ICE, the mileage showed is always different at different fillups. It depends on how you drive.

 

[LNFitz]

The GOM is not always most pessimistic range. Wind and speed pushed me to draft off of trucks on the prairies. Just take GOM with a grain of salt and don't push your luck until you have an understanding of conditions and your own driving. It all affects the range.

 

[Murse-In-Airy]

the car wants to be at about 80° F. Anything under 70° and it will start to be reflected by the Guess-O-Meter. 61° and you lost about 1% of the Guesstimated range. Seems reasonable.

 

[Garbone]

Did the kids take the car out and flog it and not let you know? Time to check that charging log and odometer....

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