What speed do they base fuel consumption on in miles or km?

Question

i know what unit they measure it in but what speed lol the second guy got it right maybe the other too out to lunch

Answer 1

In most of the world, the metric measurement is given as Liters per 100 kilometers. So a lower number is better.  3.4 L/100km is better than 5.3 L/100km

In the US it is measured in miles per gallon.  Higher is better.

Answer 2

as in MPG

50-55 highway and maybe 20 mph city I think

Answer 3

In the US, it's miles per gallon.

In some other countries, they use metric.

Answer 4

http://www.fueleconomy.gov/f*g/fe_test_s...