Terrible Highway mileage!

MN-MME

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Sounds about normal to me. I have the standard range and do 1.7-1.8 miles per KWh on average, highway and city combined. Can't get over 2 ever. Granted I'm in PA and it's only about 40F outside, but still.
It's definitely difficult to get decent mi/kWh in cold temps, but I managed 2.3 in single digit temps at speeds of mostly 55-60mph. One thing I've noticed is that setting a departure time and letting it precondition makes a HUGE difference.
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MacherAWD

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When I had my Gen 1 Leaf I had plenty of experience with this. I am in New England, so in winter I would drive backroads to work, no heat, and not going over 50mph, it would use 25% of my battery. Coming home I took the highway for the 25mile trip and I would burn 50-70% of my battery based on speed.
 

MacherAWD

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It's definitely difficult to get decent mi/kWh in cold temps, but I managed 2.3 in single digit temps at speeds of mostly 55-60mph. One thing I've noticed is that setting a departure time and letting it precondition makes a HUGE difference.
Yes, so short trips (which we do alot) really eats up range, and a low mk/kWh, but longer trips are less impactful.
 

Sully11740

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You should have insisted the dealer 100% charge before taking the car, they are required to, just like a full tank of gas is required - you paid for it.
The dealership I ordered my car through was sold the week before my car arrived (11 months after I ordered it lol). The "new" dealership did NOT have a fast charger and I picked up my car at an out of state dealership with less than 50% charge faced with a 250 mile drive home for my first drive in an EV. I charged at a WAWA and made it home with 30something miles on my GOM. I'm not a worrier and was not too nervous on trip. This new dealership did NOT do a great job of delivering my vehicle in a number of ways, but as a salesman myself working on commission, I was not going to bust their horns because I was NOT contributing at all to their profits with my purchase. I got the car using xplan pricing and financing based on 2021 interest rates instead of late 2022 rates and was just happy getting the car after the almost 12 month wait..
 

jterhune

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I got my 2023 GT performance in December. It has never shown 270 miles when it was 100% charged today it shows 263 miles does that have to do with it being winter?
 


prinx

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Hi
So I have been reading through the thread and I think I might have a point of view.

So speed is bad on a road trip… and yet it is called a Mustang. Sure Ok.
A good majority of us are first time ev owners and look at a display giving you a range that is nowhere near what the sticker said, and try to explain physics to our significant others about why the car isn’t going to come close.

We are comming from ICE cars that have a supporting infrastructure to refuel every 5 feet, and a refuel time of 5 minute. While possibly live in a changing desert as I do in Northeast PA with a refuel time of an hour, and not to full.

So we ordered a car that supposedly went up to 247 miles and you have to try to arrive at a charger with 10 to 20 miles left just in case the charger is broke / full or whatever. When we fill it on the trip you only go to 80% or you should have walked to your destination. So best case on a good day if the planets aligned you get to drive 150 miles in between hour charging stops. Again this is Mustang?
So was Ford trying to perfect the old Fails on race day joke With the don’t go fast and your going to have a terrible pit time Mustang.

I am not even going to discuss all the talk about HVAC. Your brain has an id10t error if you think driving a car without hvac in the winter is acceptable to make your destination. Please I want to be the fly on the wall as you tell you wife, or children you can’t run the heat or defrost because you might not make it home. What is this the Mustang horse and buggy with the smallpox blanket ride in Central Park… Common Man They have to do better.

We all spent upwards of 50k for this car, we should expect more.

Now I love ,my Mach e. I think it is cool and fun.
I did one 265 mile road trip. From Pa to Princeton NJ. I charged to 75% in Philadelphia on the way back. Car said it had 172 miles and the rest of them trip was 121. At the Highway exit I got the you might not make your destination message no chargers near by. (Made it home but not fun having the wife think she’s walking down the highway to a service station)

Back and forth in town to work and errands ok, It maybe a Mustang but it is definitely not a road trip car.
Vacation time is too valuable to waste charging.

Yes I know I should have bought a bigger battery car, but PA to Flordia 7 stops of 30 to 40 min.. that’s nuts.

Finally the GOM.
Here is my problem. When I first got my car, it wasn’t charged at the dealer and the first drive home was range anxiety. After charging it to 100% at home the GOM said 196. In my warm garage. I have never seen the 247 number there that my select advertised.

I get all the reasons, but seriously a car that can do all this cool stuff CAN WE JUST GET SOME OF WHAT SHOULD BE SIMPLER AND CALMING A LITTLE MORE ACCURATE. I not asking a lot just a descent realistic fuel guage.

Mach e owners are going to hold standup comedy acts about their cars.
THANK YOU! Lots of rudeness on this forum. Most of us are first time EV buyers. OFC we will have questions as to why the car we got is not working as we thought it would. So far I am loving my MME BUT I don't like that the battery range is not what I thought it would be. Then you got us doing math on a car?!?!?!
 

Christina

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I'm saying the the starting range is inaccurate. I'm simply asking for tips on highway driving not smart a$$ remarks. :D This was my first trip. I thought the Forum would be helpful? ?
I get where you are coming from, the first six months driving were a bit of WTF. I learned it's the percent charged that matters, not the estimated miles. And even though I live on the Central Coast of CA, we get extreme temps 4-6 months out of the year so Heat/AC are a huge factor. I'm glad you made the choice to turn around and charge, nothing worse than range anxiety the last 20 miles home, where you start to strategize where you can stop and how to park and who to call if you run out of battery.
 

MN-MME

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Does anyone use math instead of the GOM?

I had a 124 mile trip to make in single digit temps and didn't want to take my wife's gas guzzler. Knowing that a fully charged standard range MME has 70 kWh of usable battery, I did the math. I needed to average better than 1.77 mi/kWh (124/70) to make it.

If you're worried about range, you can use the voice prompt while driving to help with the math... let's say you're down to 58% battery, have 140 miles left to go, and your trip info says that you're averaging 3.2 mi/kWh. Using the voice prompt...

(assuming standard range)
"What's 58% of 70?" (Answer: 40.6)
"What's 40.6 times 3.2?" (Answer: 129.92)

At your current average mi/kWh, you have about 130 miles of range. YOU'RE IN TROUBLE!!

"What's 140 divided by 40.6?" (Answer: 3.45)

Reset your trip info, slow down, and average at least 3.45 mi/kWh for the rest of your trip.
 

SpaceEVDriver

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Does anyone use math instead of the GOM?

I had a 124 mile trip to make in single digit temps and didn't want to take my wife's gas guzzler. Knowing that a fully charged standard range MME has 70 kWh of usable battery, I did the math. I needed to average better than 1.77 mi/kWh (124/70) to make it.
I have always done math instead of using the guess-o-meter, even in ICE vehicles, and well before vehicles started to estimate range. Doing the range math with an 8th of a tank (nearest graduated mark on most fuel indicators) has become pretty much second nature to me.

I've rarely seen an accurate range estimation in any vehicle.
 
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SpaceEVDriver

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Yeah but driving slowly is boring and I hate it when people pass me. I like to pass people. ?
I drive fast when I don't need the range.
 

RickMachE

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I got my 2023 GT performance in December. It has never shown 270 miles when it was 100% charged today it shows 263 miles does that have to do with it being winter?
Actually, 263 isn't reality in a Chicago winter. You'd be lucky to break 200.
 

Burnsy8787

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holy crap, the only way for our Select to manage 3.4 mile/KWh is to drive 65. At 75 it’s down to 2.5.

Yeah, I simply do not believe he is getting that efficiency at 75MPH. Even in warm weather my best case driving over 70 is high 2's.
 

hprose

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James, the efficiency of a BEV decreases significantly the faster you drive. This is the opposite of what you expect in a gas powered car that typically gets better gas mileage on the highway.

All BEVs have the same issue and all are worse at high speeds. It is physics. It takes a lot of energy to push a car though the air, and the faster you go, air resistance increases exponentially.
But even gas vehicles dramatically lose range as you go over 70-80. The wind resistance is not linear.
 

dbsb3233

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But even gas vehicles dramatically lose range as you go over 70-80. The wind resistance is not linear.
Somewhat, but range is a virtual non-issue in ICE vehicles because gas stations are everywhere and range is usually way longer to begin with. And the degree of loss at high speed seems to be much worse in an EV too. And the range loss is compounded in an EV by so many other factors (like cabin and battery heating).

Driving 75 MPH in an ICE might be like 10% worse than driving 45 MPH (if even that).
Driving 75 MPH in a BEV can easily be 30% worse than driving 45 MPH (or worse).
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