Trade-Off Between Weight and Fuel Economy

According to Forbes Autos, the average weight of "light-duty" vehicles rose from 3,221 pounds in 1997 to 4,144 pounds in 2007. Ironically, part of that weight gain comes from safety equipment that has been added over the past 10 years, some of which was federally mandated. But in balancing weight, fuel economy and safety, certain technology is crucial, the article contends.

Acura MDX Trims, 5 Available

The 2009 MDX is a 4-door, 7-passenger luxury sport-utility, available in 5 trims, ranging from the Base to the Sport Package and Entertainment Package.

Upon introduction, both trims are equipped with a standard 3.7-liter, V6, 300-horsepower engine that achieves 15-mpg in the city and 20-mpg on the highway. A 5-speed automatic transmission with overdrive is standard.

The 2009 MDX is a carryover from 2008.

New BMW Sport Z4 M 2008

2008 BMW Z4 M Trims, 2 Available

Select a trim below to see pictures, 360° views

New Car 2009 Chevrolet Cobalt

New 2009 Chevrolet Cobalt Trims, 8 Available

Select a trim below to see pictures, 360° views, feature lists and more: