One problem related to engine knocking noise has been reported for the 2008 Jeep Wrangler. The most recently reported issues are listed below.
-the contact owns a 2008 Jeep Wrangler 2-dr 4x4. While driving approximately 55 mph a banging sound was coming from the engine, followed by a decrease in the engine power. The vehicle continued in operation to the residence, and upon inspecting the vehicle there was no oil in the engine. The vehicle was towed to an authorized dealer where the technician informed that the engine needed to be replaced. The vehicle had not been repaired. The failure and current mileages were 40,000.