One problem related to engine failure has been reported for the 2008 Jeep Wrangler. The most recently reported issues are listed below.
At 54,500 highway miles, two rod bearings failed in the engine resulting in total engine loss. After engine replacement the throw out bearing failed resulting in failure of the clutch. Engine failed while being driven on a freeway but was able to be driven into the dealership. Clutch failed while being driven on city streets resulting in towing.