Covered fleets must have a 75 percent AFV percentage acquisition for a model year. Model year runs from September 1 through August 31 of the following year. To determine the total alternative fueled vehicles acquisition requirements for the model year, multiply the total vehicles acquired during the model year (this is the total number of LDVs, including AFVs and conventional vehicles, purchased or leased by the agency during the reporting model year by 75 percent. Fractions greater than or equal to one half (0.5) should be rounded up; fractions less than 0.5 should be rounded down. (Simply stated, if you purchase four LDVs during the model year, three must be AFVs, if you purchase three, two must be AFV’s, and if you purchase two or only one, each vehicle must be an AFV.).