should i buy a 2015 jeep cherokee

Every car you look to purchase should be inspected to see what the current condition is and if there are concerns. There is no way to know if the transmission will or will not fail, depending on maintenance performed to date, the way the vehicle is driven and of course underlying possible design issues. It's best for you to do as much research as reasonable for you to make a good decision. For example, low miles or high miles? Any maintenance history on the vehicle?