It’s still a completely different issue. Yes, cold temperatures decrease a battery’s maximum capacity. But based on laws of physics, energy is still conserved. The battery in the Maverick is 0.9 kWh. Even if it could only hold 0.6 kWh, when it is cold, that would not change the mpg. A smaller battery capacity does not increase how many kWH, or horsepower-hours your vehicle uses on a specific trip. What does increase how many horsepower-hours / kWH you use in the winter is 1) additional accessory load, including the engine needing to be on more frequently for heating, 2) increased air drag due to colder, thicker air. 3). increased rolling resistance of tires due stiffer, colder rubber. 4) increased friction in bearing surfaces due to lower temperatures and higher viscosity of grease / oil. 5) rain/snow. Rain falling and water on the roadway increases rolling resistance and wind drag. How much? 10% for heavy rain without standing water on roadway. Even more rolling resistance for snow, but velocity needs to be lowered, obscuring comparable data. I know this from doing 130k miles in an EV on my work commute, doing the same route and the same velocity each trip and watching my daily kwh usage. And more rain/snow happens in the winter, compared to summer. 6) wind speed. Both headwinds and cross winds increase energy usage. This becomes super apparent when driving an EV and seeing a continuous read out of energy usage data. A strong cross wind, without any headwind, can increase energy consumption by up to 15%. And average wind speeds are nearly doubled in the winter in the northern hemisphere. December has the highest average wind speed. July has the lowest average wind speed.
Perhaps could have happened earlier but happened to be on highway - battery temp 22 F.
I notice a 5mpg drop in economy when it gets cold and I do not run the heater. Battery efficiency, tire rigidity, lots of factors. The same happened with my Volt. It gets worse when I use the heater a lot, but not as much as you are reporting. Where you at?
My ford maverick 2023 lariat hybrid never got over 40 miles per gallon, 39 miles per gallon, it dropped to 38 and now 37, I am in Canada where it has been real cold, I guess that is a good reason, thinking of trading for all wheel drive and the newest light blue color but an XLT, do not need all of the extra bells and whistlesDon't read theanswers.
I couldn't find an emoji of a snarky.
You omitted your location. If your in Bismarck North Dakota the engine is running more to keep the cab heated???
If you're in Miami Florida you may have a problem.
Today is 13 Jun 2026. I have a '23 model year Maverick hybrid. My most recent service was withn two weeks. Right after that, my mileage began dropping. I usually get 48 - 52 mpg, but after maintneance, it dropped to 43. Tire pressure was within specs. Yesterday, while driving ilocally, t continued dropping to 38. The day was quite warm -- 91 - 97 F. While I wondered if the weather was the culprit, I noted online service tips that clogged filters, stuck fuel injectorsm and mixture ratio computer may be a problem. I made a service appointment for Monday. Then, on the return local trip, the mineage shot UP. The trip monitor, which indicated 29 mpg for the previous trip, now read 82 mpg for the return. Day was still very warm. This suggests it has nothing to do with running the AC, tire pressure, or weather. I'll be intrested to see what the service appointment on Monday reveals. Point is, don't be dismissive of rapid changes in mpg. There can be a systemic problem that requires attention.
