U.S. car sales have been recovering, but sales slipped 4.2% in September, the first decline in over two years, due to the way the calendar pushed Labor Day promotions into August results.

The First Trust NASDAQ Global Auto Index Fund (NYSEArca: CARZ) declined 0.6% Tueday. CARZ is up 38.3% year-to-date. [Auto ETF Revs Up as Car Sales Hit Six-Year High]

For more information on the car industry, visit our automobiles category.

Max Chen contributed to this article.