You will need to remove the undertray
Undo the undertray fixings. Carefully remove the undertray – be careful because it is quite heavy
With an oil catchment tray in position, use a 19mm spanner or socket to carefully remove the sump plug. Fully drain the oil.
When the sump has emptied, wipe clean the sump plug area with a paper towel
Do not forget to have a suitably sized receiving tray in place