Knowing its history, personally, I wouldn't buy a Nissan equipped with a CVT. But you've got one - so I'd just take very good care of it. Yes, you may end up with a transmission replacement at some point - but that's generally a $4K-$5k-ish expense, so it can be planned for. Also: Many people seem to skip the maintenance on these transmissions. Check your owner's manual, but I believe transmission fluid changes are recommended every 30K or so miles (and, knowing the weakness of the design, I would err on the side of changing the fluid more frequently).