$3.74, $4.05, even $4.39 for some fuels, it's enough to make you scream. So how would you feel if the pump began charging you before you even started fueling? It's happening.

It may be only amount to an extra five or ten cents, but consumers say that's still too much.

"I'd be upset about it because it's so expensive as it is. Seven cents is seven cents. It's a lot," Brenda Green said.

The Florida Department of Agriculture is responsible for inspecting all gas pumps in the state.

Inspectors make sure all the pumps are calibrated properly, the right amount of gas comes out of the nozzle and the counter reflects the right price. But how do you know the pumps are accurate? We followed a petroleum inspector as he checked some pumps in Panama City. He says the problem doesn't happen often.

"Very few times have I ever caught one that was off, but I have caught them off, out of calibration. But that's very few times," James Wood, a Florida Department of Agriculture petroleum inspector, said.

But while we were with wood, we found one customer who said it happened to her at that same moment.

"I clicked it down and it went to eight cents and then I started pumping," the customer said.

The eight cents didn't seem to bother her or some other customers, but for those on a tighter budget it has a stronger effect.

"I don't work very much, so I don't get very much money to put into my car. So it does a lot to me," Lindsey Crawford said.

We must point out that, according to James Wood, this is not some kind of plot by the gas station owner. He says sometimes the pumps will appear to roll-off a few cents before any gas comes out of the nozzle.