Man, it's his right to demand a certain amount. If you don't want it, you shouldn't buy it. The trick is the seller gives the highest demand and the buyer gives the lowest offer, and usually things settle in between.
I have the same car 2018 manufactured and delivery taken in March 2019, and I just got done replacing the fuel pump and the steering rack yesterday. So the cars made during this time bracket have issues, too.
39.5 is alot for an year old car, I personally think. Should be around 34-35 I reckon. Experts here can give a more accurate figure.