The author briefly visited Poznan when travelling by train and ferry between Berlin and Copenhagen in 2008. As with any other large European city that was previously situated behind the Iron Curtain, Poznan has a perfectly adequate tram and bus network.
Poznan also has a very traditional urban core and some fantastic historic buildings. Visitors will probably also want to get out a bit beyond the city and start exploring further afield. For this, we think that a hire car generally makes a lot of sense.
Is it worth hiring a car in Poznan? A rental car here is far from essential, and there certainly no need for one within the city centre, but it will probably come in handy for travelling further beyond.