Michael Schumacher admits he is not the same driver he was during his heyday but insists he is still young enough to succeed.
The seven-time world champion turned 42 in January and is about to embark on his second season back in Formula One after a three-year absence.
Schumacher did not manage a single podium finish during 2010 and was regularly outpaced and outscored by Mercedes team-mate Nico Rosberg.
And with the German now a year further into his 40s, some have said that he is simply too old to regain the pace he showed during his prime.
But Schumacher is adamant that while time has taken its toll on his body, it is still possible for him to battle with the best on the grid.
“Certainly it is not possible to turn back the biological clock,” he told German magazine ADAC Motorwelt.
“It is a fact that I am not absolutely the same now as I was 10 or 15 years ago. But as to whether I am still good enough, I would say yes.”
