Michael Schumacher had sim sickness

MADRID -- Formula One team Mercedes has acknowledged that Michael Schumacher struggled with motion sickness in its simulator but said it "is a relatively common occurrence" and didn't affect his performance last season.

After reports in Germany that the seven-time F1 champion has repeatedly become car sick in the simulator since returning to the sport, the German team issued a statement to downplay the issue.

Mercedes said the problem had "not adversely affected Michael's race preparations or his competitiveness." It added that the 42-year-old driver has been "susceptible to simulator sickness" throughout his career and that it was "exacerbated by the level of our current simulator technology."

Schumacher finished ninth in the championship after coming out of a three-year retirement.