The experts from an automotive research firm iSeeCars performed an extensive study to determine the depreciation rate of different vehicles. At first, they analyzed 3.6 million purchases of new cars in 2013. Then, they compared the results with more than 750 thousand transactions in which five-year-old used vehicles were sold in 2018. To make the calculations more accurate, iSeeCars adjusted used car prices from 2018 by 7 percent to 2013 dollars. Basing on that data they were able to compute the average five-year car depreciation rate of different models.
According to this particular study, the average five-year depreciation rate of vehicles in the U.S. is around 50.2 percent of their initial value. However, some models depreciate significantly faster than others.