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Asked by Michael Gaffley 2 years 139 days ago.

Why does my car seem to be heavier on gas consumption in winter?



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I have noticed that my car which usually gives me 23 miles to the gallon is now only giving me 20 miles per gallon. Does the cold and feezing temperatures impact gas consumption?

Answers to this question:
» Answer from P. Eric Willms Answer given 2 years 138 days ago.
On a per action basis, your car will use more fuel when it starts, and is cold. As it takes longer for a car to heat up in the cold weather, you will be using more fuel in the winter time. Once your engine heats up, things go basically back to normal consumption mode. very basically that's your answer. It's a little more technical than that, but this covers most of it.

» Answer from Dianne Lehmann Answer given 2 years 138 days ago.
Since you are in Florida and presumably (except for the weather recently in the news) it doesn't get all that cold. I've been told that manufacturers are required to alter the formula of their gasolines in the winter for purposes of controlling emissions and that the altered formula is less efficient and causes a slight lowering of gas mileage. I don't know if this is true. I've never cared enough to look into it further.

» Answer from Richard Vail Answer given 2 years 137 days ago.
Because...G-d said so...

if that doesn't work, in colder temps, petroleum products don't burn as evenly. therefore you have lower milage.

» Answer from Johnathan David Answer given 2 years 137 days ago.
This one is easy. In the winter your car has to work harder to keep the engine running and it will start up cold. Just starting it up cold will use more gas, but also when you run the heat all the time it will consume your gas as well. There is not a lot you can do about this.

» Answer from Ben Morrish Answer given 2 years 137 days ago.
Maybe if it has air-con maybe it uses more power to keep you warm in winter than it does to keep you cool in summer.

» Answer from Paul Jones Answer given 2 years 137 days ago.
It is probably because that you are using the heating too much in your car as it is cold.

» Answer from Peter Peterson Answer given 2 years 135 days ago.
Well, in short, metals expand as temperature increases and they shrink as temperature decreases. Since your engine is designed to operate at a specific temperature it takes longer time for it to warm up and reach it's optimum operating temperature.

» Answer from Richard Hurford Answer given 2 years 134 days ago.
The viscosity of oil is such that it lubrication properties increase when the temperature rises. Therefore more fuel(energy) is required to drive the engine.

» Answer from Robert Truog Answer given 2 years 133 days ago.
In cold weather it takes longer for your car to reach full operating temperature. So everytime you restart you must go through the same extra use of energy...and your consumption goes up and efficiency goes down.

» Answer from Royston Tan Answer given 2 years 132 days ago.
Nope, it should not be getting lesser when temperature is cooler. However, when temperature rises, your petrol gas will evaporate faster.

» Answer from Lawrence Pfister Answer given 2 years 132 days ago.
I believe you get less gas milege in the winter is because everything on your car is colder the wheels, the wheel berings, the tires are stiff. etc.

» Answer from Kiril Petrov Answer given 2 years 131 days ago.
Your car needs more time during winter to heat up the engine and during that time it consumes a lot more fuel than normal. But when the heat goes to normal level everything is back to normal ... except ... there is a lot of ice on the road and there are places where you skid a lot. The engine is running, the wheels are spinning but the car does not move at all (or advances very slow).

» Answer from Andrew Lawton Answer given 2 years 131 days ago.
If you live in an area where there is snow on the road your car is working harder to move. If it is just colder, and there is no snow, I am not sure!

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