July sees big jump in fuel efficiency of new cars

WASHINGTON – Cars and light trucks sold in July got more miles per gallon than those sold in previous months, say researchers, who credit the Cash for Clunkers program.

The average mileage for new vehicles rose from 21.4 miles per gallon in June to 22.1 mpg in July. That may not sound like much, but it

Study co-author Michael Sivak, a professor at the university