Nykoping is a coastal town in Sodermanland, Sweden, and it is worth clearing up one point of confusion right away: the code XWZ associated with Nykoping refers to a railway station identifier, not an airport, so anyone searching for car rental tied to that code should not expect an airport terminal or on-site rental counter at a station of that name. The genuinely useful nearby option for air travelers is Stockholm Skavsta Airport, which despite its name actually sits just a few kilometers from Nykoping itself and serves as a real, functioning gateway with rental desks operated by international and local companies.
From Skavsta, picking up a car puts you in easy reach of both Nykoping and the broader Baltic coast of Sodermanland. Nykoping's town center and harbor area are just minutes from the airport, while Stockholm itself lies roughly an hour to ninety minutes northeast along the E4, Sweden's main north-south motorway, making Skavsta a genuinely practical, often less congested alternative to arriving directly at Stockholm's larger Arlanda airport for anyone planning to explore this part of the coast.
Sweden drives on the right, and the E4 and connecting regional roads around Nykoping are well maintained and easy to navigate, running through a mix of coastal towns, forest and farmland typical of Sodermanland. Fuel stations are common along the E4 corridor, and Sweden has no toll roads outside of a handful of urban congestion charges in Stockholm and Gothenburg, neither of which affects a typical Nykoping-area trip. Winters bring cold temperatures and occasional snow or ice, especially from December through February, so a car equipped with winter tires, standard on many Swedish rentals during that season, is worth confirming when booking a trip to this Baltic coastal region.
Spring and summer bring long daylight hours and easy coastal driving, making the short hop from Skavsta into Nykoping and along the surrounding Sodermanland shoreline a pleasant, low-stress way to start a Swedish road trip.