Cold vs Warm MPG difference — how big was yours?

[MABETT]

With warmer temperatures rolling in

, fuel economy across Maverick owners seems to be shifting again.

Winter MPG drops are expected

— but what’s interesting is how different the recovery looks in spring.

Some owners are reporting noticeable gains

, while others are saying their numbers haven’t changed much at all.

It raises a simple question:

How much of a difference are you actually seeing between winter and now?

If you’ve been tracking it, feel free to share your current MPG

— and if you’ve got a dashboard or trip screen pic handy, even better

.

Curious how much it varies across Hybrids, EcoBoosts, tire setups, and driving conditions.

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[DS_Ohio]

Upper 80s yesterday. This works out to just shy of 31mpg when the ICE was running.

 

[RFEJR]

I usually see 2-3 mpg's difference between cold and warm weather driving in mixed highway/city driving. I see as low as 22 mpg in cold weather and as usaually around 25/26 mpg in warm weather mixed driving. If I'm traveling with all highway driving in warm weather I've seen as high as 31/32 mpg. This is for an ecoboost.

 

[Cherokee]

I get 1 mpg less on average in the winter only because I start it up from my key fob from inside my warm cabin and let it Idle for ten to fifteen minutes.
I got a nice toasty warm cabin and seats and steering wheel when I get in and drive off.
It’s a Lariat Ecoboost thing, It spoiled me rotten.
:’P

 

[710-oil-614]

I get 1 mpg less on average in the winter only because I start it up from my key fob from inside my warm cabin and let it Idle for fifteen minutes.
I got a nice toasty warm cabin and seats and steering wheel when I get in and drive off.
It’s a Lariat Ecoboost thing.
:’P

Funny thing, my hybrid does that too. Doesn’t lose much efficiency doing it either because it can use electric heat to get everything going where your ecoboost needs to start and warm up before it gets toasty.

 

[Raymundo76]

With warmer temperatures rolling in

, fuel economy across Maverick owners seems to be shifting again.

Winter MPG drops are expected

— but what’s interesting is how different the recovery looks in spring.

Some owners are reporting noticeable gains

, while others are saying their numbers haven’t changed much at all.

It raises a simple question:

How much of a difference are you actually seeing between winter and now?

If you’ve been tracking it, feel free to share your current MPG

— and if you’ve got a dashboard or trip screen pic handy, even better

.

Curious how much it varies across Hybrids, EcoBoosts, tire setups, and driving conditions.

Hybrid much worse in winter, Eco much worse in summer has been my experience in AZ

 

[Prickly Pear]

What just kills my MPG is short trips with cool down periods long enough to drop the coolant below 120F. Yeah it takes longer to warm up in cold weather, but once it is warm if my driving time is much longer than the worm up time I can still hit MPGs near 50. If I have to make several stops running errands and the engine reaches ambient temp while I am out of the truck I'll be seeing MPGs in the high 30's low 40's. Winter is way worse as the ICE is running longer with the longer warm up times.

 

[ZeroDay]

14.5km/L in the winter on Michelin X-Ice Snow. It got cold enough a couple times the hybrid system wouldn't kick on at all to protect the batteries.
20.5km/L in the summer Factory Continental TX

 

[earlyhike]

With a 2023 Hybrid, in winter months I can get as high as 44mpg. Whatever I get in the winter I always see a 4-5 mpg decrease during the summer.

I know that's not what anyone says should happen but that has been the case consistently for me for the last 3 years.

I don't typically remote start my vehicle to any significant degree in summer or winter.

 

[Blue_Max]

My EcoBoost gets noticeably better mileage in Florida winter vs. Florida summer.

 

[DadofTim]

With warmer temperatures rolling in

, fuel economy across Maverick owners seems to be shifting again.

Winter MPG drops are expected

— but what’s interesting is how different the recovery looks in spring.

Some owners are reporting noticeable gains

, while others are saying their numbers haven’t changed much at all.

It raises a simple question:

How much of a difference are you actually seeing between winter and now?

If you’ve been tracking it, feel free to share your current MPG

— and if you’ve got a dashboard or trip screen pic handy, even better

.

Curious how much it varies across Hybrids, EcoBoosts, tire setups, and driving conditions.

Key Differences at a Glance

• Reid Vapor Pressure (RVP): This measures how fast fuel evaporates. Winter gas has a high RVP so the fuel vaporizes easily in freezing temperatures, preventing hard starts. Summer gas has a low RVP to prevent excess evaporation in hot weather, which reduces smog and ground-level ozone.
• The "Butane" Factor: Winter blends contain up to 10% butane, a cheap and highly volatile component that boosts vapor pressure. In summer, butane must be removed because the heat would cause it to evaporate in the fuel system (leading to power loss and vapor lock), and replaced with costlier, stable components like alkylate.
• Energy Content & Fuel Economy: Because of its denser, less volatile composition, summer blend gas provides about 1.7% more energy per gallon, resulting in slightly better highway fuel economy during the warmer months.
• Price: Summer gas is more expensive to refine because removing butane and substituting cleaner-burning, high-octane additives is a rigorous, labor-intensive process.
• Transition Dates: Under the EPA's Clean Air Act, gas stations begin selling winter-blend fuel in mid-to-late September, and transition back to summer-blend fuel on June 1 to combat summer smog

 

[23OxOrdered]

For my 2023 hybrid picked up in October I got approx 40 thru first winter and noticed was cracking 50mpg during first summer on a tank of gas kept resetting it.

Last spring I reset my B trip odometer and for ~5k miles i was above 50 but winter brought it down to 47.1 through ~7k of miles but with warmer temps past couple weeks my B trip odometer is at 7.6k miles and mpg up to 47.4mpg

 

[lm126027]

With warmer temperatures rolling in

, fuel economy across Maverick owners seems to be shifting again.

Winter MPG drops are expected

— but what’s interesting is how different the recovery looks in spring.

Some owners are reporting noticeable gains

, while others are saying their numbers haven’t changed much at all.

It raises a simple question:

How much of a difference are you actually seeing between winter and now?

If you’ve been tracking it, feel free to share your current MPG

— and if you’ve got a dashboard or trip screen pic handy, even better

.

Curious how much it varies across Hybrids, EcoBoosts, tire setups, and driving conditions.

y

With warmer temperatures rolling in

, fuel economy across Maverick owners seems to be shifting again.

Winter MPG drops are expected

— but what’s interesting is how different the recovery looks in spring.

Some owners are reporting noticeable gains

, while others are saying their numbers haven’t changed much at all.

It raises a simple question:

How much of a difference are you actually seeing between winter and now?

If you’ve been tracking it, feel free to share your current MPG

— and if you’ve got a dashboard or trip screen pic handy, even better

.

Curious how much it varies across Hybrids, EcoBoosts, tire setups, and driving conditions.

Just yesterday did a run fron Central MA to western SC. Run at 8 sbove the speed limit to a max of 75 when not in traffic. Got 30.9 30.4 32.4 for at trip total of 31 even with the air running. When I do this run for Christmas get closer to 27 for the run. Don't have exact figures for last winter's run.

 

[manfred]

With warmer temperatures rolling in

, fuel economy across Maverick owners seems to be shifting again.

Winter MPG drops are expected

— but what’s interesting is how different the recovery looks in spring.

Some owners are reporting noticeable gains

, while others are saying their numbers haven’t changed much at all.

It raises a simple question:

How much of a difference are you actually seeing between winter and now?

If you’ve been tracking it, feel free to share your current MPG

— and if you’ve got a dashboard or trip screen pic handy, even better

.

Curious how much it varies across Hybrids, EcoBoosts, tire setups, and driving conditions.

 

[manfred]

2025 Hybrid AWD XL

urban cold winter, mid 30’s mpg
urban warm summer, mid 40’s mpg
flat interstate cruise control 75 mph, temp 60’sF, high 20’s mpg
flat interstate cruise control 80 mph, temp 40’sF, low 20’s mpg
mixed state park tour, 70 mph highway, low speed gravel and hilly 2 lane pavement, temp 60’s 45 mpg

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