Gas Pump Habits That Are Costing You Money

Overfilling the tank can harm engine performance, and modern vapor recovery systems are designed to absorb the excess gas anyway, making topping off both pointless and potentially damaging.

Gas prices are typically cheaper early in the week and climb toward the weekend -- plan fill-ups accordingly to save a little each time.

Convenience often wins over price. Gas price apps and websites can point you to better deals nearby that add up to real savings over time.

Chains like Circle K, Exxon Mobil, and Shell offer fuel rewards programs -- worth joining if you regularly fill up at the same station.

Premium rarely benefits vehicles that don't require it -- the FTC found drivers wasted over $2 billion on unnecessary premium gas in a single year. Stick with regular unless your manual says otherwise.

Properly inflated tires improve gas mileage enough to outweigh the small fee some stations charge for air -- make checking pressure a regular habit at fill-ups.

Many cards offer cash back specifically on gas purchases -- check your card's program to make sure you're capturing that benefit automatically.

Drive smoothly -- aggressive acceleration and braking can cut mileage by up to 33% on highways. Turn off the engine rather than idling for more than a minute, and clear excess weight from the trunk (every 100 extra pounds costs about 1% in mpg). Use cruise control on highways, combine errands into efficient routes, track fuel price trends, consider carpooling or ride-sharing, and keep up with regular maintenance like oil changes and air filter swaps. Apps like GasBuddy, Upside, and Gas Guru can also turn up discounts and rewards.

Small adjustments to fueling habits and driving behavior add up to meaningful savings over time -- and a little awareness at the pump goes a long way toward lowering your overall transportation costs.