Ecosport Titanium registered 2018 1 litreEcosboost Automatic 9000 miles . NO it should not jerk. In fact after many auto boxes I feel the Ford one is pretty good.
If you floor the throttle in S ( sport) it might be a bit snatchy but I haven't found it so. Possibly a software update needed although I have not been advised of one.
When was the car registered? Is it definitely an auto box? The lever should read PRNDS. Some of the earlier models had a Ford 'powershift' box which is is a semi auto box.