Do you need a vignette to reach Nové Zámky?
The Hungarian motorway vignette only covers the Hungarian section of your route. Once you cross into Slovakia, a completely different toll or vignette system takes over — OptimÚt calculates the Hungarian leg for you, up to the border.
Border crossing
Via Esztergom (Mária Valéria híd (helyi közút)): This cost/time covers the route to Esztergom (the Mária Valéria Bridge, the Hungarian-Slovak border) only — Nové Zámky is about another 50 km from Štúrovo on the Slovak side, where Slovak tolls/vignette apply. The bridge is a local road, not a motorway link.
How to calculate it
Open OptimÚt, enter your own starting point in "From", and type Nové Zámky into "To" — OptimÚt automatically recognises it as an international destination and calculates the route, toll cost and required vignette(s) up to the border, for whichever of the crossings above turns out faster or cheaper for your specific starting point.