A Boeing 747 has a maximum fuel capacity of 48,445 U.S. gal (183,380 L). The average American light-duty car in 2009 got around 24 miles per gallon. The circumference of the Earth is 24,901 miles (40,075 km).
This means that one full 747′s worth of gas could drive you around the Earth 46 and a half times!
Here’s the math:
48,445 gal*(24 miles/gal)=1,162,680 miles
1,162,680 miles/24,901 miles= 46.6 times around the Earth.
Talk about a poor mpg rating: According to Boeing’s Web site, the 747 burns approximately 5 gallons of fuel per mile (12 liters per kilometer).