I have a little 12v pump that I use on my Benz to extract the oil from the top. The car is low and ramps actually make it harder to get the oil out of the sump. It does get all the oil out but takes 30 minutes.
https://www.amazon.com/Transfer-Extractor-Diesel-Electric-Motorbike/dp/B01KZIFZVK/ref=mp_s_a_1_7?keywords=12v+oil+extraction+pump&qid=1578381767&sprefix=12v+oil&sr=8-7