Volkswagen AG doubled output of its Slovak factory to a record last year as the introduction of new models offset slowing demand for cars across Europe. The plant located just outside the Slovak capital, Bratislava, assembled a 419,888 vehicles, compared with 210,441 in 2011, the unit’s chief Albrecht Reimold told reporters Thursday. New Small Family models, which were introduced in late 2011, accounted for almost one-half of shipments. Europe’s largest carmaker is boosting output in the eastern country, seeking to benefit from its euro adoption combined with lower labor costs than in Western Europe. Volkswagen’s Slovak unit will seek to maintain the record production volume, depending on market conditions, Reimold said.