Fresh from one of his best displays of the season, Michael Schumacher has revealed that he hasn't always had the same machinery as team-mate Nico Rosberg.
Schumacher was expected to challenge for the title in his comeback season, but Mercedes GP have been nowhere close to the front-runners while the seven-time Champion has also been outperformed by younger team-mate.
The 41-year-old, who finished sixth in Sunday's Japanese Grand Prix, says he often had problems which were not picked up by those on the outside.
"The car worked great this time," he told broadcaster RTL after the race.
"Unfortunately, I cannot say it has been that way at all the races. There have often been problems - especially on my car, in terms of the consistency - that were not always noticed from the outside. You only saw that I was slower, [but] both cars have not always been the same."
