We're on Nissan #4. I'm not saying this is advised but...

07 Altima traded at 145k, never touched CVT, 0 issues (front O2 sensor is the only problem in general that had to be dealt with) 14 Juke 60k still have, CVT never serviced, 0 issues 16 Maxima 102k never serviced CVT, no issues traded in

4 is a 19 Maxima at 18k. Plan to have for a while and do plan to have the CVT fluid changed at 30k despite our positive experience having done the opposite just for peace of mind. We might do the Juke soon too, my wife is waffling on whether to get a new car or not. The Juke is no longer under warranty and the Maxima is only up to 60k, I didn't get an extended warranty this time like I had on the 16 Max since I had no issues.

My personal opinion is if you're worried about it, do it unless your CVT is under some warranty still in which case I wouldn't sweat it if they would be the case until you ditched it. You'd probably be fine but its worth the money now if you can't afford to replace the CVT later. If you are a driver that drives balls out, accelerates faster than you really need to then you probably do need to do it.