Arona 1.0 ltr. 95hp jerking

Moin together, I was looking for a successor for my wife’s polo to come across the Seat Arona. Yesterday we made a test drive with a style from 2021 with the 1.0 liter and 95 hp engine and hand-operated. We like the car very much and we would like to buy it. But, now I noticed with warm engine and light rolling away (about 50km, 3-4 gear) a jerking. Also, it is difficult to give in the traffic flow a bit gas without having a relatively strong ruck g ibt. I pointed out to the seller. Unfortunately, he only shrugged with his shoulders. Is it possible to eliminate it by Seat by software update? Or is it what it is like, and with that one would have to live? Thank you in advance for information and opinions. Greeting Rüdiger