The structural layout of Déli has faced intense debate within Hungarian transit planning circles. Situated directly adjacent to a tunnel cutting beneath the Buda hillside, the terminal sits in a constrained geographical trench. Winter rockfalls and retaining-wall structural movements periodically trigger service suspensions, forcing MÁV to run substitution buses from Kelenföld station further south.
State rail planners previously debated shuttering Déli in favor of channeling all traffic through Budapest-Kelenföld, converting Déli's footprint into urban green space. Passenger feedback and transit modeling proved that abandoning the terminal would overwhelm metro transfer points and isolate Buda residents. As a result, the Ministry of Transport and MÁV committed funding to structural reinforcement, overhead catenary replacements, and automated track switching systems across the 2024, 2026 budget cycles.
Modernization also extends to the rolling stock. Modern Stadler KISS double-decker electric trains and Stadler FLIRT trainsets now handle the heavy suburban routes between Déli, Érd, and Székesfehérvár. These trainsets feature step-free boarding, climate control, and digital real-time journey displays, replacing the older push-pull compartment carriages that dominated Hungarian tracks for decades.
