In some parts of the country, gasoline prices have hit $4.00 a gallon. The U.S. Energy Department estimates gas prices nationally will average $3.86 per gallon through the summer.
That's a big increase — up nearly 40 percent compared to last year. So what does that mean for the economy?
Higher gas prices are not going unnoticed at Stan Hatoff's discount gas station in Boston's Jamaica Plain neighborhood.
"It's not good for the people, this is very bad," says customer Omery Velagoshti, who was filling up his tank.
Velagoshti works doing food deliveries for his son's family restaurant, and he says he's been making some changes in response to the rising gas prices.
"I go for shopping or just for coffee less than before," Velagoshti says. Now he wants to save money to make up for the extra money he's spending on gas.
Economists are trying to figure out how much rising gas prices will hurt consumer confidence and consumer spending.
At the next pump, Nancy Morales and her husband Luis are putting $50 in their old Jeep Cherokee. Their son is in the back seat.
"Every weekend is like nope, money for gas not personal items," Nancy says.
The family runs a small house-cleaning business, and they've been cutting back a bit too.
"We wanted to go to Bonkers this weekend and we have to (decide between) Bonkers and the price of gas," she says.
To save money, they decided not to eat at Bonkers Funhouse Pizza, where their son likes to play video games.
Blowing a little less money on pizza and video games probably won't drag the whole economy down, but if hundreds of millions of people start cutting back in significant ways that could add up to big problems.
Whenever we pay more for gas, dollars leave this country to pay for imported oil," says Peter Morici, an economist at the University of Maryland. "That's money that could be spent on U.S. products and in turn, it slows demand, slows growth and slows jobs creation."
The economy has been doing better recently, and the unemployment picture is improving. But Morici says rising gas prices will slow that growth and might even stop it.
"I can't predict recessions better than anyone else," Morici says. "But I do know that rising gasoline prices in a country that imports 10 million barrels a day is very detrimental to economic growth and can seriously threaten the recovery."
Other economists are much less concerned including Nariman Behravesh, chief economist at the forecasting firm IHS. "The increase in gasoline prices, even to above $4.00 a gallon, is not a huge deal," he says. "Clearly it is squeezing some households, especially lower income households. But it's very different from what happened back in 2008."
Back then, gas prices also hit $4.00 a gallon. But at the same time, the country was sliding into a historic financial crisis. The Federal Reserve says the economic recovery is "on firmer footing."
Behravesh says most Americans really don't spend that much money on gas. "Average households spend about five percent of their after-tax income on gasoline. That has risen a little bit from about two percent a couple of years ago when oil prices and gasoline prices collapsed. So it is higher, but its not a killer, this is not something that's going to kill this recovery."
Behravesh says everybody is very aware of gas prices.You have to stand there watching the cost tick up slowly as your tank fills and your wallet empties.
Same thing for some visible food items: prices are up for milk and beef. But overall, Behravesh says inflation has been very mild for all kinds of other things: flat panel TVs, refrigerators and haircuts. Still, he doesn't want to see gas prices rise much further. Copyright 2011 National Public Radio. To see more, visit http://www.npr.org/.