GasBuddy has just released a new study finding the best and worst days to buy gas for the best savings.

The pros at GasBuddy analyzed three years worth of fuel price data and they found that MONDAY offers the lowest average, making it the best day to fill up your tank. So what’s the worst? They say Thursday had the highest gas prices with the most expensive averages.

Here are some of the stats from their study:

 

  • In 2017 so far, Monday is the best day of the week in 23 states.
  • In 2016, Monday was the day featuring the lowest average gasoline prices in 36 states, while eight states saw Tuesday as the victor.
  • In 2015, Monday saw the lowest gasoline prices in 22 states.
  • In 2014, Wednesday was the day of the week offering the lowest average gasoline prices.

LEARN MORE HERE. 

“The rise in average prices towards the weekend could be to blame on an influential report from the Energy Information Administration (EIA) issued weekly on Wednesdays, which could push prices higher the day after, depending on if data in its report is as expected or a surprise,” said Patrick DeHaan, senior petroleum analyst at GasBuddy. “Since commodities trading isn’t active over the weekend, it typically allows stations to ‘let it ride’ over the weekend, culminating in lower prices by the start of the work week.”

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To put the amount of savings into perspective: if every U.S. motorist bought gasoline on Thursday for an entire year, they’d collectively spend an extra $1.1 billion versus filling up on Monday – the lowest priced day of the week.

By shopping around and optimizing the usage of gas price data in the free GasBuddy app, motorist can save on average $325 a year.