Breaking News Emails

Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.
/ Source: The Detroit Bureau

With increasingly stringent mileage standards coming down the pike over the next decade, automakers are frantically racing to find ways to boost the fuel economy of their vehicles. A new study suggests that “Stop-Start” technology — which shuts an engine off, rather than idling — can reduce fuel consumption by 5 percent to 7 percent. And it achieves a similar reduction in the production of global-warming CO2 emissions, according to research by the AAA. “Up to 7 percent improved fuel economy can mean a $179 annual fuel savings for consumers,” says Greg Brannon, director of AAA’s Automotive Engineering and Industry Relations team. The auto club based its estimate on a motorist driving 15,000 miles a year in a vehicle averaging 20 mpg, with fuel prices running $3.65 a gallon. The financial benefits of Stop-Start decline when the technology is used on vehicles already getting better mileage, and some makers say the fuel savings are closer to 1-3 percent. Navigant Research says Stop-Start was used on just 500,000 vehicles sold in the U.S. last year but estimates that will reach 7 million by 2022.

Sign up for top Business news direct to your inbox.

More from The Detroit Bureau:

The 14 Worst Cars of the Decade

Frustrated with High-Tech Features, Car Buyers Less Satisfied

Behind the Wheel of the 707 Horsepower Dodge Challenger Hellcat


-Paul A. Eisenstein, The Detroit Bureau