It’s easy to share metered taxis (AR$15) between downtown, the bus terminal and the airport. From Av Roca, buses marked ‘B’ or ‘terminal’ link the center and the bus terminal (AR$1.30).
Car rental is expensive due to the poor conditions of the roads to most places of interest. Despite exchange rates, rental deals are often better in Punta Arenas, Chile. For local rentals, try Riestra Rent A Car (421321; Av San Martín 1504).