Bayerische Motoren Werke AG's shares rose as much as 5.2 percent to an all-time high on Wednesday due to U.S. sales rising 30 percent in September.

The Munich-based company's shares rose as much as 2.1 euros to 41.8 euros. The shares have climbed 36 percent this year, making it the second-best performer on Germany's benchmark DAX index.

BMW's U.S. sales reached 14,494 units in September, and have climbed 16.3 percent for the year. BMW's German sales have also climbed despite a slumping new car and truck market.

BMW shares have also climbed since the automaker's sale of unprofitable Rover. BMW is forecasting record profits this year, as worldwide output reaches 800,000 vehicles for the first time.