Larry Vellequette:

The next-generation Jeep Wrangler may be built off a unibody platform, feature smaller and turbocharged engines, and switch to an aluminum body, Fiat Chrysler Automobiles CEO Sergio Marchionne said.
 
 Such significant changes to the hot-selling SUV would likely mean leaving its longtime, historic production site in Toledo, Ohio, Marchionne said today.
 
 In his strongest comments to date about Fiat Chrysler’s future plans for the Wrangler, Marchionnne hinted strongly the next-generation version is likely to be fundamentally different from the venerable off-roader available today.
 
 The next Wrangler, due in 2017, has to lose weight and be powered by smaller engines than its current 3.6-liter V-6 engine in order to help Fiat Chrysler meet stricter U.S. fuel economy rules.