I just called the owner of the car back and asked him if the car was a 4cyl or 6cyl and after a few minutes he understood and said 4cyl.

Then I said that the car is a 230e not a 280 and he said he has a deposit on the car and it should be gone by the morning.

Just a short while ago when I spoke to him the first time, he seemed very interested in selling the car to me and said to call him tomorrow with an offer, but now he changed very quickly.