 Buick and Oldsmobile automobiles were brought in to New Zealand by various automotive importers from the onset of the 20th Century and throughout the 1920s until the formation of General Motors New Zealand.Both brands were locally assembled at the GMNZ Petone plant, with Buick from January 1927, and Oldsmobile from 1928.A snapshot of the automotive industry in 1933 shows that 86% of vehicles on New Zealand roads were American and 7% of those were Buick.