Schumacher sealed his lone point on the opening race of the season

The Toyota driver, 31, has won just one point from the first three races while his team-mate Jarno Trulli has four.

"I'll answer on the track when the car is competitive again," Schumacher said.

"No driver changes his style from one day to the next. It's about improving the car's set-up and reacting to the driver's needs."

Schumacher added: "The season is still long, we have only completed three out of 17 races, and there will still be plenty of surprises.

"I believe that - just like last year - we will continue to improve throughout the course of the season."

The German's contract runs out at Toyota at the end of the season.

However, manager Hans Mehr believes Schumacher has a future in F1, even if it is away from the Japanese team.

Mehr said: "Ralf is one of the best Formula One drivers in the world. There is no need to worry about his future.

"If he wants to drive, there will always be a cockpit waiting for him."