Used 2007 Jeep Values Select a 2007 Jeep model below to get used trade-in values and retail prices. Four new models are introduced to the Jeep line-up for 2007. New Jeep Wrangler and Wrangler Unlimited are wider as well as longer than the previous generation model. Only vehicles that meet the high program standards of Kelley Blue Book and pass inspection, as signed off by an ASE Certified Technician, are eligible for the Kelley Blue Book Certified Pre-Owned CPO vehicle program. All vehicles must be six 6 model years or newer with less than 75,000 miles.