<prompt> Human: A LOT of people i know and they are not rich change cars pretty often and i dont get why, they always say its to keep the car value from dropping too much so when they have to sell its not worth anything. . Cars devalue about 10 or more a year from what i hear im not sure, and extra 1015 just from buying the brand new car. so if you have the car for 10 years it would be worth ... what? 30 of the original value? And sure you would save in maintenance costs but if you sell your car with 5 years it would be worth about 50 of its original price. so selling it buying a new one and using for extra 5 years and selling it again you would have recovered 0 of your investiment. . I dont get it, i plan to use my car until it doesnt run anymore...am i wrong to do so?  <response>: No, you are not wrong. People buy cars very few years because they enjoy new things, there is no financial reason to do so. edit: I will say that there are some cars that hold value better than others, and a car doesnt depreciate linearly. It depends on the make and model but there some cars where their value falls a lot after its crossed a certain threshold say 100k miles, and if the person was going to sell it at 120k miles anyways it might make more sense to sell it at 90k before it plummets in value. But it makes more financial sense to hold onto a car as long as possible instead of trading them every few years. 