For other uses, see Flea (disambiguation). Fleas are small flightless insects that form the order Siphonaptera. As external parasites of mammals and birds, they live by consuming the blood of their hosts. Adults are up to about 3 mm (0.12 in) long and usually brown.
Numbeo allows you to calculate gas prices and gas consumption using information about: 1  fuel efficiency (car consumption for 100km or miles per gallon). 2  distance you are planning to travel (or cities which you intend to visit on your journey).y using car consumption and travel distance, our tool shows you approximately how much gasoline (petrol) your car will consume, an approximate price and also estimates how much will your car depreciate during that trip.
The cost of fuel had the largest percentage increase from 2011 to 2012, rising 14.8 percent to 14.2 cents per mile on average for sedan owners. The average cost of regular grade fuel (used by most of the study vehicles) rose 16.6 percent, from $2.880 to $3.357 per gallon.