I purchased my 2002 Stratus R/T 3 days ago. The dealership was over 100 miles from my home. On the drive home I noticed that my odometer was adding more miles then what the mile markers were saying I was driving; about 1/10 mile per 3 miles driven. My husband, who had just purchased a 2003 Dodge Dakota 2 weeks before, and I decided to make a test drive to see exactly what was happening. His truck adds miles properly as per miles accumulated based on the highway mile markers. We both drove our cars, with him following me, and I set my cruise control dead center on the 60MPH mark. While he was following me, my husband's speedometer said he was traveling 56MPH. Also it took me 63 seconds to travel from mile marker to the next mile marker. The trip was over twenty miles. In the end, his trip showed his truck traveling 24.5 miles whereas the Stratus showed a trip of 25.3 miles. I took it to the dealership who test drove it by stop watch & by the mile marker method but said they cannot reproduce the problem so are not sure what they can do about it. Are there any suggestions as to how to solve this issue and get my vehicle fixed under warranty?