Just read an article on Automotive News where Sergio Marchionne states the all new Jeep JL Wrangler will NOT feature an all aluminum body as was originally planned. Apparently, it just wouldn't be worth it and not really needed to accomplish what they are needing. Check it out.
Wrangler and aluminum
In addition, Marchionne said the company had changed its plans for the next-generation Jeep Wrangler, which previously was planned to have an all-aluminum body. The CEO said Wrangler would now have aluminum components -- such as perhaps a weight-saving aluminum hood and tailgate, as well as aluminum doors -- but not an aluminum body.
“There will be a large portion of that vehicle that will be aluminum. It will not be all aluminum,” Marchionne said. “We've run the numbers and we've simulated mileage and the impact. Because of the difference in cost -- not just of the material but the actual assembly process -- I think we can do almost as well without doing it all-aluminum. I think we can get very close.”
An aluminum body would have required a complete refitting of the existing Wrangler plant, in Toledo, Ohio. If components made of aluminum are hung on a steel body, no such extensive factory revamp would be necessary.
See whole article here: