Valencia, Spain, Aug 19 (DPA) German driver Nick Heidfeld remains confident of continuing in Formula One despite the withdrawal of BMW at the end of the season.

Heidfeld, 32, told German Press Agency DPA that he had already been in talks with other teams before BMW's decision, although the announcement at the end of last month took him by surprise.

With seven races left of the season with BMW Sauber - beginning with Sunday's European Grand Prix in Valencia - Heidfeld admitted he was now in the shop window in seeking a new contract elsewhere.

'My Formula One experience helps me, of course. After 10 years I have a great deal of knowledge and technical know-how,' he said.

'Apart from the fact that I have beaten top drivers such as (Kimi) Raikkonen, (Felipe) Massa or (Mark) Webber as team colleagues, it is now important to put in good performances in the next races.

'In Formula One every Grand Prix is a job application.