The car journey from Zagreb to Osijek can be accomplished speedily and easily using the Zagreb-Lipovac-Osijek freeway, a 300km stretch of easy travelling highway. The trip shouldn't take longer than 3 hours and the toll is 102kn, payable in most currencies, cash or credit card.
Another option for getting to Osijek from Zagreb is using the Podravska Magistrala state road that connects Zagreb-Bjelovar-Virovitica-Osijek.
From Budapest
If you're travelling by car from Budapest, motor right along towards Pecs, then head for Beli Manastir and Osijek.
From Bosnia
Travellers from Bosnia need to hit the following locations during a car journey Livno-Zenica-Doboj-Slavonski Šamac and your final destination, lovely Osijek.