There is no one definitive way to calculate depreciation rate for a Jeep. Several factors will need to be considered, including the age and condition of the vehicle, its make and model, and the local market conditions. Generally speaking, a Jeep will depreciate at a rate of around 10-15% per year. However, this rate can vary greatly depending on the specifics of the individual case.
One way to estimate depreciation is to use the "Blue Book" value. This is a guidebook that lists the estimated resale value of various types of vehicles. It is based on data collected from actual sales transactions. You can find the Blue Book value for different Jeep models online or in print.
Another factor to consider is the cost of replacement parts. Jeeps are known for their ruggedness and durability, but parts can still wear out and need to be replaced. The cost of replacement parts can affect the overall depreciation rate.
In the end, there is no precise formula for calculating Jeep depreciation rate. It is a complex process that takes into account many different factors. However, with a little research, you should be able to come up with a reasonable estimate.