Saab and Dutch owner Spyker on Monday sought to reassure investors of the brand's financial health, with Spyker head Victor Muller describing current problems as "a small glitch."

"Saab is not on the verge of collapse," Muller said at a presentation of new models in the Stockholm suburb of Nacka, calling media reports about Saab's financial problems "disproportionate."

Saab - which Spyker rescued at the last minute in January 2010 by buying it from US auto giant General Motors - was forced to stop production three times last week as some suppliers halted deliveries over unpaid bills, AFP noted.

The production stops were only "a small glitch" said Muller, quoted by Dow Jones Newswires.

He also said he regretted setting out sales targets for Saab after purchasing the iconic brand for US$400m.

Saab chief executive Jan-Aake Jonsson, who unexpectedly announced last month he would be stepping down in May, meanwhile stressed he saw "the situation improving shortly."

Russian businessman Vladimir Antonov - a former Spyker shareholder who GM has prevented from taking a stake in Saab  - put in a request to Sweden's National Debt Office last week to invest in the carmaker.

The authority, which has a say in ownership changes because it guaranteed a European Investment Bank (EIB) loan to Saab, said it would give its answer in a few weeks.

Antonov has said he was ready to invest EUR50m (US$70m) in Saab and wants to take a 30% stake in the company.