A fuel tank has a lot more parts to it than the average driver would think. In fact, topping off is just another common mistake car drivers can make that can destroy their engines .

If you've been topping off your tank it's time to put down the handle. This expert shows the damage you can do if you overfill your gas tank.

A ruptured gas tank could leak fuel, creating a fire hazard. Hyde played a key role in studies at Ford on T-bone accidents, one conducted in the 1980s and another in the 1990s.

Some people like to top off the gas tank while filling up their car. Consumer Reports fills you in on whether adding that extra bit of fuel can actually damage your car.