By Andrew Ganz
Friday, May 4th, 2012 @ 8:49 am
 
Moderately lower gas prices last month marked a slight shift away from ultra fuel efficient vehicles, according to a new report issued by the University of Michigan.

In March, the average combined fuel economy for new cars sold in the United States hit a record high of 24.1 mpg, but gas prices slipped about 12 cents nationally, which was apparently a sufficient catalyst to move people into slightly less fuel efficient cars in April. Last month, the average new car fuel economy was 23.9 mpg.

Both figures are significantly higher than the 20.1 mpg the Transportation Research Institute at the University of Michigan's Ann Arbor campus found during its first month of tracking back in October of 2007. The decline to 23.9 mpg matches February's average.

"Starting with the first week in April, gas prices dropped each week," said Brandon Schoettle, who co-wrote the report with research professor Michael Sivak. "We think that consumers are not only sensitive to the absolute price of gas, but also the recent changes, leading to a drop in fuel economy."

Gas prices have slid to an average of $3.80 for a gallon of regular unleaded, according to GasBuddy.com. A month ago, the national average stood at $3.92.