Winter Weather Fuel Economy

The Jim Shorkey Auto Group has an ample collection of vehicles with a fantastic fuel economy, including the best-in-class Mitsubishi Mirage, both the Kia Optima and the Kia Optima Hybrid, the Chrysler 200, and any Ford vehicle with Ecoboost (and even some Ford vehicles without).

And as far as we can tell, there’s only one thing that puts these fuel-efficient cars to the test: cold weather.

According to the U.S. Environmental Protection Agency (EPA), fuel economy tests show that, in short-trip city driving, a conventional car’s gas mileage is about 12% lower at 20°F than it would be at 77°F. It can even drop as much as 22% for very short trips, lasting about 3 to 4 miles.

But why?

Cold engine oil and other drive-line fluids cause engine and transmission friction to increase in cold temperatures. Also, it takes longer for your engine to reach its most fuel-efficient temperature when starting from a much lower temperature. This affects shorter trips more, since your car spends more of your trip at less-than-optimal temperatures. And don’t forget—those heated seats, window defrosters, and heater fans that you LOVE use additional power. Finally, colder air is denser, increasing aerodynamic drag on your vehicle, especially at highway speeds, causing it to work harder.

temperature-gauge

 

What can you do?

Park your car in a warmer place, such as your garage, to increase the initial temperature of your engine and cabin. Try carpooling or combining trips when possible so that you drive less often with a cold engine. As much as we hate to say it, don’t use seat warmers or defrosters more than necessary. Check your tire pressure regularly to ensure proper inflation. Additionally, remove accessories that increase wind resistance, like roof racks, when not in use. Finally (and maybe most harshly), minimize idling your car to warm it up. Most manufacturers recommend driving off gently after about 30 seconds. The engine will warm up faster being driven, which will allow the heat to turn on sooner, decrease your fuel costs, and reduce emissions.

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