Some Formula One teams are reportedly threatening to boycott next week's Australian Grand Prix as speculation continues around the circumstances of McLaren-Honda driver Fernando Alonso's mysterious testing crash in Catalunya.

According to the respected German publication Sport Bild, teams are not satisfied about the lack of clear information released after the crash, which has caused Alonso to miss the season-opening race at Albert Park for fear of another potential major impact.

Injured: Spanish formula one driver Fernando Alonso. Credit:Mark Thompson

Alonso spent four days in hospital and reportedly displayed memory loss immediately after the crash but McLaren insists he will be fit for the remainder of the season.