As the starting point for our calculations, we access the U.S. Government Environmental Protection Agency’s estimated mileage figures for both highway and city driving, then adjust based on the estimated percentage of mileage for these two types of driving. Although the Vincentric system can customize the values to better meet your specific needs, we have developed standard allocations to enable effective comparisons.

We then add in an estimated price for each gallon of fuel. We update our fuel estimates monthly by state using industry sources that track up-to-date fuel prices. Since we are estimating long term fuel expenses, we use a 5-month weighted average for fuel prices that is skewed toward the recent months. This is done to eliminate some of the short term "peaks and valley's" that are seen in fuel prices.

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