Porsche AG sold 2,400 vehicles in the U.S. in January, a rise of 34 percent on month-on-month 2010 deliveries.
Sales of the Cayenne SUV remained particularly strong, the company said in a statement. The automaker sold 1,047 Cayennes, a 77 percent rise from last January.
The Panamera was Porsche's second most popular model in the U.S., with sales of 604 units, a rise of 13 percent this year.
Sales of Porsche 911 models fell 15 percent in January to 436 units, while sales of the Boxster and Cayman sportscars rose 97 percent to 313 deliveries.
''We are experiencing a welcome upward trend in the U.S. with the Porsche brand enjoying double-digit growth. This is particularly noticeable in the Cayenne and Panamera models,'' said Bernhard Maier, Porsche's board member for sales and marketing, in the statement.
Following a strong year in 2010, Porsche is looking to expand its dealer network into China's interior markets. The automaker, which currently has 35 Porsche dealerships in mainland China, plans to open 10 dealerships a year, it says.
The company hopes to exploit China's rapidly growing demand for sports cars and luxury cars. The Cayenne SUV was Porsche's most popular model in China with sales of 8,351 units last year, outstripping demand for the model in the U.S.
In total Porsche sold 14,785 vehicles in China in 2010, a 63 percent rise from 2009.
The company has said that it aims to sell 15,000 units annually in China by 2013. To hit that target, it is considering a proposal to build the Cajun crossover -- which is still under development -- in the same Chinese assembly plant as its sister vehicle, the Audi Q5. The four-door Cajun is scheduled to enter production in 2013.