For a mere 3k dollar difference, what are the mechanical and technological difference between the two?! So the Sahara can come equipped with the premium chrome group while the Rubicon can not. Both have a 3.6 V6 engine, 5 speed automatic or 6 speed manual transmition. Their 4WD does differ. The Rubicon comes equipped with 4:1 Rock-Trac Part time 4WD system, while the Sahara comes with the Command-Trac Shift-on-the-fly 4WD system! Rubicon is a 4.10 Axle ration while the Sahara is 3.21. The Unlimited Sahara has heavy duty suspension, while the Rubicon has perfomance suspension!Both come equipped with Uconnect and the Alpine Sound System!