When you buy gas could be as important as where

KALAMAZOO, Mich. (NEWSCHANNEL 3) - You may put some thought in to where you buy gas, but how much thought do you put into when you buy gas?

This summer, Newschannel 3 has been tracking gas prices in West Michigan to see if there is a certain time you should choose to fill up.

Gas Buddy tracked prices across the state of Michigan for four years, 2010 through 2013.

They found in Michigan, and in 65 percent of states across the country, the lowest gas prices were actually on the weekend. But is that the case where you live?

For one month starting on June 19th, we tracked gas prices at eleven stations across Kalamazoo.

During that time, prices ranged from a high of $3.93 on June 26th, to a low of $3.34 on July 18th.

However, we did not find the best prices on weekends.

The best day to buy was Wednesday, with an average price of $3.58 for regular unleaded gas. The worst day to buy was on Thursday with an average price of $3.73.

Many different factors from around the world can lead to price changes at the pump.

For example, the average price at the Kalamazoo stations jumped 28 cents per gallon from Wednesday June 25th to Thursday June 26th.

That may have happened because oil prices jumped over violence in Iraq.

Rebels had taken Mosul and there was concern Baghdad could be at risk.

"There is not a 100% of the time super-accurate statement that will always be true" said Patrick DeHaan, a petroleum analyst with Gas Buddy. "There are just too many things going on the world that are impossible to predict."

However, DeHaan does say over the course of a year, starting off your work week by filling up could pay off, because prices rarely rise on weekends, and sometimes drop.

"There are good rules, if you were to fill up every Monday morning, you would probably come out better than the average person who knows nothing about when to fill up," he said.

However, in our test, Monday actually had the third lowest average price, with both Tuesday and Wednesday even lower.

It serves as a reminder that gas prices are not an exact science.

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