The Juke does not have the qr motor.
There were early oil consumption issues with the 2.5, but everyone got recall notices for it and we would test and replace thousands of engines. If there are any left it is because the owner chose to never bring it to the dealer.
The early 08 Altima came with an air filter that was flammable if it came in contact with a heat source, i.e. someone tossed a lot cigarette out the window and it traveled through the ram air setup and into the filter it would be bad. These were quickly remedied with a different filter and baffles in the ducting. Hardly any cars met their maker because of this.
Yes those are big, shitty issues, but it has not deterred me from loving the shit out of my 2.5 cars.