Oil extractor

[maxaret]

Don't remember it being difficult to do on most cars TBH,on the Polo I had to remove a sizeable lump from the rear of the undertray and it is really easy to drain now - obviously varies from car to car but there should be no reason to remove the undertray on most cars just to drain the sump.
Some cars used to have a little door/flap to gain access to the sump drain plug.