Ramsey Solutions financial expert Chris Hogan on the impact of the rising cost of cars on American consumers.While new vehicle Opens a New Window. sales in the U.S. got off to a slow start in 2019, those who may be considering a purchase Opens a New Window. might want to look into how long their car will retain its value.As previously reported by FOX Business, cars can lose as much as 10 percent of their value within just the first month after driving it off the lot.