BMW, maker of luxury limousines and sporty cars, said it is expanding a U.S. plant so it can produce an extra American-made model.

The Munich-based company declined to identify which BMW model would be added to its production at the plant in Spartanburg, S.C., which currently builds its popular Z3 roadster.The Rheinpfalz newspaper reported that BMW planned to build a sport utility vehicle in Spartanburg. The company announced plans for the vehicle at the Detroit Auto Show in January, without saying where or when production might start.

BMW has planned since 1996 to invest about 370 million marks ($202 million) to expand the Spartanburg plant, bringing its total investment there to 1.5 billion marks ($819.7 million), a spokesman said.

BMW's U.S. sales have been increasing for the past six years, including a 16.2 percent rise last year as 129,600 cars were sold, the company said.

BMW is also planning to expand in Europe.

Last month, Vickers PLC said it had accepted a $570 million offer for its Rolls-Royce luxury car division from BMW, which already sup-plies engines for the latest models of the fabled luxury car.

Vickers shareholders will vote on the deal, probably in May.