Of all the registered cars in the United States what is the average Miles per gallon?

Of all the registered cars in the United States what is the average Miles per gallon?
The average miles per gallon of new vehicles in the United Statesis 25.4 miles per gallon. Older cars and heavy trucks can be muchless efficient and are not commonly factored into the annualstatistics. The 2016 goal is to have all cars on US roads to be ator above 35.5 miles per gallon.