GT Highway Gas Mileage in Cold Weather

I regularly drive to a relative's house about 30 miles one-way. In Normal mode, that pretty much gets me near 0 battery by arrival. On the return trip, in Normal, while I stay at and arrive at 0 battery, the trip computer tells me about 10 miles of the return trip was on battery. My guess is that would be what I generate driving, similar to a pure hybrid.
Yes. In this Corsair (first one did not), I can see the RPM type usage of Excite mode on my regular screen for normal. I find normal and conserve will use EV, but Excite struggles to use it.
 
When Normal mode uses all available battery capacity set aside for EV, which I guesstimate to be about 10 kWh, it automatically switches to hybrid. There is a portion of the battery that is used for hybrid driving. Depending on driving technique your mpg can vary widely. I've gotten between 35 to 55 while in hybrid.
 
I’m going off personal experience. Excite mode does charge the battery not only during braking but also during deceleration especially down hills. In my vehicle, the Preserve mode did keep battery at about 80% but I got horrible gas mileage at 27MPG. Conserve mode also will improve gas mileage but at the expense of performance.
Your definition of charging in Excite mode is just the definition of how hybrid works and is true for all modes.

Preserve mode would be the worst for short trips at least and presumably worse than Conserve and Normal for longer trips, because it doesn't use the charge on the battery and may in fact use some energy to add charge. To fairly compare the other modes to Preserve you'd have to include driving (Pure mode?) that works off the stored HV charge.
 
Your definition of charging in Excite mode is just the definition of how hybrid works and is true for all modes.

Preserve mode would be the worst for short trips at least and presumably worse than Conserve and Normal for longer trips, because it doesn't use the charge on the battery and may in fact use some energy to add charge. To fairly compare the other modes to Preserve you'd have to include driving (Pure mode?) that works off the stored HV charge.
And yet when I get to my destination in Excite mode I still have 89% of my HV battery range to use. That doesn’t happen in Normal mode.
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And yet when I get to my destination in Excite mode I still have 89% of my HV battery range to use. That doesn’t happen in Normal mode.
Right. Excite, is the sports mode. With a full battery, it is indeed fun to drive. Best horsepower, handling, and more.
 
There is nothing wrong with the math and everyone enjoys a condescending critique.

I hope it makes you feel better.
 
Yall are funny. So, is there something wrong with my Corsair GT or is this what I should expect for cold weather highway mileage? @greerl is correct. The Corsair weights 500+ lbs more than the Ford Fusion hybrid. I've had the FFH and the MKZh, plus as this is my second Corsair GT. Shockingly, the MKZ got less mileage with the same system. Why? its heavier. The same principles that apply to an ICE vehicle also apply. Forget the fact the original post said less than 10k miles. The engine still has to break in. Even the EV motor and battery breaking in time to get going. Last I checked, most manuals tell the driver/owner something like that for the first 2000-5000 miles of breaking it in. Second, just like the AC/heat hurt the ICE mileage, the same goes for the Corsair. Plus, I know at that temperature, you are running the heat, defroster, etc. That further kills mileage.

"This is an average of 23.98 mpg, just horrible in my opinion. I have filled up 9 times, I can barely get 200 miles before I feel the need to fill up since in these conditions, I don't let it get below 1/4 tank."

Plus, I challenge your math. Its an 11 gallon tank. that's 99 gallons. If you fill up at 1/4 left, it should be 75 gallons. I too keep gas logs. I've driven 700+ miles several times with one fill up after a full tank. Even in hybrid mode, I've gotten 38.4 and 36.3. The worst I ever got was during Christmas, which is why I know all of these things. That tank was 33.2, but all of these in the summer. The best tank I've ever done was 1761 miles. I plugged up CONSISTENTLY, but only got gas once in five weeks lol.

First problem of cold weather, if the temperature reads under 32, is that the vehicle will start the engine. NOTHING you can do about it. I believe its part of the programming to keep the ICE in great condition. In EV mode, if you run the car heat, seat heaters, and steering wheel heater, you will blow through EV miles too.

Finally, another poster said this too: do not worry about the individual trips. You haven't had the vehicle long enough to compare trips. The Corsair is programmed to learn to drive WITH your style to maximize mileage. There really is an increase when you drive in conserve mode. Why? It charges the battery enough to then go back into EV mode in shorter sprints. Did you check for chargers when you stopped? You can always pick up 10 EV miles in an hour, then use that to get more EV miles.

hope that helps.
There is nothing wrong with the math and everyone enjoys a condescending critique.

I hope it makes you feel better.
 
Actually I think your numbers are correct for the driving you have described. I have a 2022 GT and would expect similar numbers. What kills your mileage are a couple of things that you probably already know.

At high speeds you are running pure ICE. At 75 mph mileage become extremely poor compared to say 55/60. In some reports I read it can cut the 55 mph consumption by 1/3. Your numbers seem to verify that. Since you are running pure ICE, the hybrid option never gets a chance to engage and help with mpg. And lastly filling up at 1/4 tank means you only use about 8 gal of gas. Can't get a lot of distance on that amt of gas.

At those cold temps battery capacity drops. So for the slower speeds you get less. Just the way batteries work. In the warmer months I get 35 miles on a charge, now I get 27. And my local temps aren't as low as you have described.

You indicated you had FFH previously, as I have. The GT is 700 lbs more than the FFH (4400 vs 3700). Gonna cost more gas/electrons to carry around that extra weight.

So to answer your initial question, yes you should expect this in cold weather.
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I'll chime in. Currently driving a Maverick Hybrid. Same engine as Corsair PHEV. On the highway 70-80 mph I'll get 26-28 mpg. This is Florida warm weather. I would guess at 0 deg F it would drop. Only way I can see this thing getting 33 mpg in ICE mode is to have cruise set at 60mph
 
I want to thank everyone for their input on this post! I feel a lot better about the gas mileage situation now than I did. I'm quite sure my mileage will improve in the future, and I'll be satisfied with the results. I really do appreciate all the personal experiences shared.
 
I'll chime in. Currently driving a Maverick Hybrid. Same engine as Corsair PHEV. On the highway 70-80 mph I'll get 26-28 mpg. This is Florida warm weather. I would guess at 0 deg F it would drop. Only way I can see this thing getting 33 mpg in ICE mode is to have cruise set at 60mph
yes!! but I can only do 60 when driving around town, not a long distance drive across multiple states.
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Actually I think your numbers are correct for the driving you have described. I have a 2022 GT and would expect similar numbers. What kills your mileage are a couple of things that you probably already know.

At high speeds you are running pure ICE. At 75 mph mileage become extremely poor compared to say 55/60. In some reports I read it can cut the 55 mph consumption by 1/3. Your numbers seem to verify that. Since you are running pure ICE, the hybrid option never gets a chance to engage and help with mpg. And lastly filling up at 1/4 tank means you only use about 8 gal of gas. Can't get a lot of distance on that amt of gas.

At those cold temps battery capacity drops. So for the slower speeds you get less. Just the way batteries work. In the warmer months I get 35 miles on a charge, now I get 27. And my local temps aren't as low as you have described.

You indicated you had FFH previously, as I have. The GT is 700 lbs more than the FFH (4400 vs 3700). Gonna cost more gas/electrons to carry around that extra weight.

So to answer your initial question, yes you should expect this in cold weather.
Thank you for catching what I talking about with the 8 gallons of gas. My math was ignored lol.
 
There is nothing wrong with the math and everyone enjoys a condescending critique.

I hope it makes you feel better.
You are funny. I would have felt better had you actually read what I wrote, instead of assuming it was a condescending critique. I said things from my personal experience to assist in understanding, never to make a person feel less than.
 
yes!! but I can only do 60 when driving around town, not a long distance drive across multiple states.
I agree there is now way on a interstate with posted speed limits ranging from 70-85 mph I could sit in the right lane at 60. Some folks do it, thank you for using the right lane.
 
I finished my trip and here is the data, its just data, everyone can draw their own conclusions.

View attachment 19915
Just adding what the Corsair computer reported, the mpg is a bit optimistic but still pretty close. The two mile difference is the distance to my house from my gas station.
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Just adding what the Corsair computer reported, the mpg is a bit optimistic but still pretty close. The two mile difference is the distance to my house from my gas station.
View attachment 19921
Thanks for sharing. I do my mileage per tank and per 10000 miles. The biggest variable I can see from your data set is the cold. Question. How are you using the EV mode? I know that helps so much. Do you allow the car to recharge by regenerative breaking? I have another data set in a post about the mpgE figure. I'll see if I can find it. I use my battery like hell, charge at home, AND hypermile. Its fun to squeeze every last drop. Oh, one more question. The temperature... how did you get the average? is that the high versus low? When the temperature reads below 32, the car will NOT use EV mode until the gas engine is warm. That killed my mileage every morning lol.
 
Cold weather kills your battery. Kills it!

For instance, during the Summer I can expect 34 miles of pure EV. Currently, in the NJ cold of 19 degrees, I am getting 24 miles.

So, yes, the cold weather is affecting your pure EV and hybrid performance.
I just asked my dealer (in CT) how it’s possible to have only driven my 2022 PHEV Aviator TWO miles & used SEVEN miles of electric. I don’t recall seeing anything anywhere that stated the 21 electric miles my car is supposed to get will vary based on temps. nor by how much.
 
Thanks for sharing. I do my mileage per tank and per 10000 miles. The biggest variable I can see from your data set is the cold. Question. How are you using the EV mode? I know that helps so much. Do you allow the car to recharge by regenerative breaking? I have another data set in a post about the mpgE figure. I'll see if I can find it. I use my battery like hell, charge at home, AND hypermile. Its fun to squeeze every last drop. Oh, one more question. The temperature... how did you get the average? is that the high versus low? When the temperature reads below 32, the car will NOT use EV mode until the gas engine is warm. That killed my mileage every morning lol.
I changed the EV Mode when I was seeing poor mpg, but I could not see any difference.

When on the highway, there really is no breaking so there is no regenerative breaking. I don't know that it can be turned on or off anyway?

Since you asked, I just used my credit card history to pinpoint my location for each fillup and then I used weatherunderground to look up the average temperature for that location for that date. I updated this info in the table below.

Thank you for the discussion. Although the Corsair GT is a very comfortable way to travel, it is clear to me that it is not well suited for long range travel in the cold weather. It has limited range (200miles) and the mpg are pretty poor, IMHO.

1706097741169.webp
 
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