FORT LAUDERDALE (CBS4) – Ft. Lauderdale based AutoNation Inc. said Tuesday its new vehicle sales fell 3 percent in August.

The largest U.S. dealership chain said it sold 18,121 vehicles last month. The total included a 7 percent jump in domestic sales and a 3 percent increase in premium luxury sales, but a 10 percent decline in import vehicle sales.

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Overall, U.S. auto sales rose 7.5 percent in August. But Toyota and Honda both posted double-digit declines for the month, as they continued to struggle to fill dealer lots in the wake of supply shortages stemming from the March earthquake and tsunami in Japan.

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AutoNation operates more than 250 dealerships in 15 states.

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