News 12 at 6, June 19
As the summer temps are rising, you may have noticed your car's gas guzzling is increasing too.
Gasoline actually expands when it gets hot and that means when you fill up in the summer, you get less of it in your tank.
And, it could cost you between 3 and 9 cents a gallon.
Gas is priced at 60 degrees, but when it gets warmer than 60-degress, the gas expands.
That means less of it actually gets in your gas tank and that's why you get poorer gas mileage.
A consumer watchdog group says it could be costing drivers around $1.5 billion.
A congressional panel is looking into this.
One possible solution is being used in Canada where the pumps automatically adjust volume, based on the temperature.
So, you may want to buy your gas in the cooler parts of the day, either in the morning or the evening.
Also, don't top off your gas; the extra could end up sloshing out or evaporating and you've already paid for it.
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