Renault Nissan, including for the first time the sales of the AvtoVaz Lada brand, captured 9.8% of a global market that contracted 4.5% in 2009.
In 2008, the alliance without Lada had a share of 9.4%.
Renault and Nissan sold 2,309,188 and 3,358,413 vehicles respectively last year.
Sales of Lada accounted for 417,457 units. Renault's worldwide sales decreased by 3.1% and Nissan's by 9.4%.
The Renault Group's market share increased to 3.7% in spite of declining sales (-3.1%).
Of the group's 15 biggest markets, 11 reported a market share increase.
In western Europe, Renault reclaimed the position of third-ranked brand, mainly owing to the success of the Megane and Twingo.
In the LCV market, the group's market share rose 1.2 points to 15.6%.
The Renault LCV brand maintained its number one position. Dacia sales rose 91% and reached 1.3% of the European market.
Nissan closed the year with a total sales of 3,358,413 units, down 9.4% compared to previous year.
Nissan's global market share was 5.4%.
In the US, Nissan and Infiniti sales totaled 770,103 vehicles, resulting in a record market share of 7.4%.
In 2009, Rogue set a record of 77,222 sales, a 5.7% increase over last year. Sales of Maxima and the 370Z sports car saw increases of 13.3% and 26.9% respectively compared with 2008.
In Europe Nissan sold 498,027 units representing a 17.2% decrease over 2008.
The Qashqai remained Nissan's most popular model in Europe with 202, 823 units sold.
The UK was Nissan's biggest market with 84,441 units sold. Germany saw gains of 32% to 64,092 units.
In other markets, sales were 498,863 units, a 21.5% decline.