Download online free . 2007 Jeep Wrangler is a small SUV that comes with many enhanced features. The enhancements include new body structure, suspension and steering tuning to provide a more refined on-road experience. For power, Jeep has replaced the previous inline six-cylinder engine with a new 3.8-liter 202-horsepower V6. It’s more powerful than the old engine, but it also must move more weight; the Wrangler Unlimited weighs in at about 4300 pounds, more than 1000 pounds heavier than last year’s regular Wrangler.