The buggy is designed for a maximum load of 22kg.
From about 1m 14cm the lying surface is too short.
If you try to drive very fast, the front wheel starts to vibrate a lot.
The front safety bar needs to be bent a little in the right direction to make it work as it should.

As the buggy is not very stable, I would not recommend it for a child 1+. Either way, I would not buy this Hauck buggy again, because after a short time the front wheel starts to wobble and the safety bar gets so stuck that it can no longer be removed.