We were returning home from a trip. We pulled into a gas station to get gas. As we pulled up to the gas pump, we smelled smoke and then saw smoke and fire. We immediately turned the Bronco off and jumped out. Shortly after, the whole engine compartment area was on fire. Luckily, there was a tow truck in the parking lot and was able to drag it away from the gas pumps. I had gotten an oil change prior to our trip. There were no warning signals, lights, or indication of temperature or oil problems. I had intermittently smelled gas while driving during our trip, but my wife said she did not smell gas on the passenger side.