Experts are warning people who tend to let their car ride on fumes often relying on the miles-to-empty gauge, saying it may not be as accurate as you think.

According to AAA, of the three ways you can monitor how much gas is in your vehicle -- miles-to-empty, low-fuel warning light and the fuel gauge -- the fuel gauge is what you should rely on to determine how much gas is left in your tank.

"Our testing found that that was wildly inaccurate, sometimes it can be like 6.5 to 7% off, which works out to 2.5 miles per gallon, so it tells you you're getting 25 miles per gallon, you might only be getting 23 and as a result it throws off the miles to empty," says AAA spokesperson Robert Sinclair.

Sinclair says people shouldn't let their tanks go below a quarter of tank either because it can pick up sediment and the junk that's in gasoline.

"When you get down to empty it picks that stuff up," says Sinclair. "It can burn out your fuel pump, it can clog the fuel injectors in your engine and your engine won't run well or it might not run at all."

Sinclair says with gas prices at the highest they've been since 2014, he understands why people are trying to go that extra few miles on what's left in their tanks.