I have owned 2 rubicon's. First was an 02 and i had absolutely no trouble at all with it. My newest is an 07 and it already has a 100 trouble free miles as well. I don't abuse them but by no means baby them either. I trail ride and mud occasionally as well too. Do the recommended maintenance and i think they are great machines. Like i said i have had 2 of them and and would buy a 3rd tomorrow if i was looking. The transmission is the selling point IMO. Excellent engine braking and very smooth.