I've always wondered something, but I've never been able to find an answer while attempting to research this, so I thought I would ask here.
Does anyone know what the gas mileage is on a large passenger jet? I know it must be terrible, but I've always wondered how much fuel big passenger jets burn.
The average passenger jet uses about 3.5 L per 100 passenger km, which equates to about 67 mpg per person on the aircraft.
A fairly efficient car getting 34 miles per gallon with two people in it would be getting 68 mpg*passenger and would be on par with an aircraft for travel efficiency.
To reach that level of efficiency, a car with 22.4 mpg would need to carry 3 people, and a truck with 16.8 mpg would need to carry 4 people. A Prius getting 42 mpg with four people would be getting 168 mpg*passenger, or using 1.4 L/100 km*passenger -- about a third of the jet plane's fuel consumption per person.
A typical 350-person jet achieving 3.5 L/100 km*passenger is burning about 1225 L/100 km, and getting 0.192 mpg. At that rate it's burning 45-50 gallons of fuel per minute! A 3500 mile flight will burn roughly 18000 gallons of fuel. Divided among 350 passengers that's still 52 gallons per person (191 tons of CO2 produced in one flight -- and over 1000 lbs. CO2 per person for the flight).
Jets contribute to global warming in more ways than carbon emission, however. The vapor trails cause cloud formation, and jets are also injecting other greenhouse gases straight into the stratosphere. Also jet fuel produces about 8% more CO2 per unit volume than automotive fuel.
Thank you for that information! That's interesting and I wasn't able to find that information anywhere else. I wasn't too far off in my guess. I figured that they got about .1 miles per gallon.
Well.. My dad flies private jets for a living, and they burn about $3000 in fuel an hour.. But, thats at 500mph and 38,000 feet high.. Cany you really even say MPG? Remember, the world isnt flat up high, you can actually see the curve of the earth when flying at high altiudes, therefore, your not really going at ground distance, unless we are talkin about air distance.