SAO PAULO--Brazilian auto makers sold a record number of cars last month, as consumers continued taking advantage of recent tax cuts by the government.

Auto sales in August rose 15% from July and 28% from a year earlier to an all-time high of 420,080 units, the National Association of Motor Vehicle Manufacturers, or Anfavea, said Thursday.

Brazil's previous monthly record for auto sales was set in December 2010, when 381,600 cars were sold in the country.

Production rose 1% last month from August 2011, reaching 329,266 cars, while auto exports fell 3.5% from a year earlier to $1.42 billion, Anfavea said.

Write to Rogerio Jelmayer at rogerio.jelmayer@dowjones.com