Depending upon the model year, the available engine options for the Jeep Wrangler X may differ. The various engine options are as follows: 1 3.6 liter V6 engine: This engine is powerful enough for off road adventures and daily driving. Two turbocharged 2.0L inline 4 engine: This engine has a good balance of power and fuel efficiency. 3 3.0 EcoDiesel V6 engine: Excellent torque for off road driving capability and improved fuel efficiency are provided by this diesel engine.