PEUGEOT RCZ Handbook page 111

FIXED SPOILER
1.6 litre THP 270 hp version only.
When pushing the vehicle, do not press on the spoiler as there is
a risk of damaging it.
When washing your vehicle with a high pressure jet-wash, keep
the end of the lance at least 1 metre away from the spoiler.
The installation of carrying accessories on the vehicles reduces
the effectiveness of the spoiler.
Only install carrying accessories that are recommended by
PEUGEOT.