You will need to remove the car's undertray to access the engine sump
Undo the fixings using a 12mm socket
Don't forget to place a suitably sized receiving tray in place
With an oil catchment tray in position, use a 21mm spanner or socket to carefully remove the sump plug and fully drain the oil.
When the sump has emptied, wipe clean the sump plug area with a paper towel and refit the sump plug and washer. . Do not over-tighten, and replace the undertray
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