You said it's wrong, "over and over again" so show a correction. The referenced under-reporting was addressed by using a range of values.

I think that you need to get specific if you want to credibly claim that someone is making mistakes in math.

To be specific about your question, http://www.nhtsa.gov/NASS "General Estimates System data come from a nationally representative sample of police reported motor vehicle crashes of all types, from minor to fatal. The system began in 1988, and was created to identify traffic safety problem areas, provide a basis for regulatory and consumer initiatives, and form the basis for cost and benefit analyses of traffic safety initiatives. The information is used to estimate how many crashes of different kinds take place, and what happens when they occur."

So my presumption about the source of the data appears to have some validity.

(incidentally, I did not use FARS data which applies to fatality rates, so your "hint" is misguided)