It is documented in the user manual that if a puncture occurs, you:-
IF A FRONT WHEEL
- Get the jack out
- jack car at rear
- remove rear wheel
- replace rear wheel with space saver
- let car down
- postion jack at front of car
- jack car up
- remove punctured wheel
- replace with wheel that was on the rear
- let car down
- place punctured wheel in boot
In truth though, it is a huge hassle, but a space saver should
NEVER be put on the front,
ALWAYS the rear.