Slovak Zuzana-2 proved unreliable for Ukrainian armed forces on the battlefield
According to Ukrainian army sources, the Slovak Zuzana 2 self-propelled artillery systems handed over to the Ukrainian armed forces proved to be very unreliable vehicles. It is known that Bratislava officially supplied these units to the defence forces at the beginning of the invasion, but they proved problematic and were hardly used by Ukrainian soldiers in combat. It is reported that the main shortcomings included hydraulic system failures, wear and deformation of the propeller and starter mechanism, and engine failures.
Source https://uraua.info/sau-zuzana-2-slovachchyny-vyyavylysya-nenadijnymy-dlya-zsu-na-poli-boyu/