7 costly mistakes to avoid at the pump right now as gas prices surge nationwide

Gas prices are climbing again just as spring travel ramps up, putting added pressure on driversfrom road tripsto simply commuting to work.

The national average price for regular gas has jumped in recent weeks, climbing to about $3.98 per gallon — up roughly $1 in just the past month,according to AAA.With seasonal demand increasing and oil prices remaining elevated, experts say drivers should expect continued volatility at the pump.

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Luckily, experts saysmall changes behind the wheeland simple maintenance habits can help stretch every tank further. 

Here are 7 of their best tips.

1.Drive smarter, not faster

Gas prices are rising again as spring travel season gets underway across the U.S.

Speeding, rapid acceleration and hard braking are some of the biggest fuel drains. 

Fuel efficiency drops quickly above about 50 mph,The Points Guyrecently reported, and federal data shows aggressive driving can cut gas mileage by up to 40% in stop-and-go traffic.

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Cruise control can also help keep your speed steady, but experts warn not to use it in slick conditions.

2.Pick the right gas

Using premium gas won’t improve fuel economy unless your vehicle specifically requires it.

Using the recommended fuel grade can help drivers avoid unnecessary costs at the pump.(iStock)

Most cars are designed to run on regular 87-octane fuel, making it the most cost-effective option,according to AAA. 

Using a higher octane than recommended won’t improve mileage or efficiency and typically isn’t worth the added cost.

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3.Keep tires properly inflated

Underinflated tires increase resistance on the road, forcing the engine to work harder and burn more fuel, experts say. 

Keeping tires properly inflated can improve gas mileage and reduce fuel consumption.(iStock)

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4.Avoid idling

Many drivers believe it’s more fuel-efficient tolet a car idlethan to turn it off and restart it, but experts say that’s a myth.

A warm engine uses only about 10 seconds’ worth of fuel to restart, meaning idling longer than that wastes gas, and engines can burn up to a half-gallon per hour while idling, according to AAA and government agencies. 

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Extra weight from cargo and roof racks can lower a vehicle’s fuel efficiency.(iStock)

Drivers can lose about 1% of fuel economy for every 100 pounds added to a vehicle, and cargo mounted on the roof creates additional wind resistance that can cut mileage by up to 8% in the city and as much as 25% on the highway, according to theU.S.Department of Energy.

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Clearing out your trunk or removing unused carriers can help your car go farther on each tank, while rear-mounted cargo options tend to have a smaller impact on fuel economy.

6.Plan ahead

Planfuel-efficient routesusing apps like Google Maps to avoid backtracking and unnecessary stops. 

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Combining errands into one trip and opting for “one-stop” locations when possible can reduce driving time, especially if you avoid peak traffic and stop-and-go conditions. 

Fewer trips also mean fewer cold starts, which use more fuel, helping drivers save gas over time, according to federal guidance.

Planning routes and combining errands can help drivers save gas over time.(David Paul Morris/Bloomberg via Getty Images)

7.Use A/C and windows strategically

Air conditioning can increase fuel use — by up to 10%, in some cases — while open windows also reduce efficiency by creating drag, so experts recommend adjusting based on speed. 

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At lower speeds, windows can be more efficient, but on highways it’s better to close them and use A/C, ideally after airing out a hot car to reduce the strain on the system.