Struggling Saab Automobile is facing fresh chaos as its managing director Jan-Åke Jonsson is leaving, amid growing doubts over its relaunch since being bought by Dutch Spyker cars.

The car company also committed to launching a new model positioned below the 9-3 and that it may even starting building cars for rival firms.

"We are talking with other manufacturers to buy a platform or drivetrain technology for this entry-level car," Muller told Automotive News. "It should come as soon as possible, in 2014 the earliest."

Jan-Åke Jonsson, who piloted Saab through its difficult sale from US General Motors to niche sports car maker Spyker last year, is leaving after six years at the helm and no company profits.

"The last three years have of course been very demanding and forced me to focus on one thing only - my work," the outgoing chief said in a statement.

"Now it is time for me to also spend some time on other things that had to stand back for my duties to Saab," the 59-year-old Jonsson added.

The announcement came hours after Spyker announced its net losses had soared last year, to 218 million euros ($309 million) against 23 million euros in 2009.

The company has sold on average 150 luxury Spyker sports cars a year.

Spyker acquired Saab from US auto giant General Motors last year hoping to relaunch the Swedish marque.

Last month Spyker said it planned to sell its original sports cars business, change its name and focus on expanding Saab.

Jonsson's departure comes just two months after Saab replaced its top executive in the United States.

Spyker founder and CEO Victor Muller will take over Jonsson's duties on an interim basis.

Two weeks ago Russian businessman Vladimir Antonov said he planned to invest some 50 million euros ($70 million) in Saab to boost its dwindling liquidity.

During the Swedish automakers 20 years under General Motors (GM), Saab never turned a profit.

Jonsson has been with Saab for almost his whole 40-year career.