The 41 year old was surprised that team-mate Nico Rosberg, who ended the season in seventh place, had not suffered the same trouble with his car. Schumacher has since exchanged words behind closed doors with team owner, Ross Brawn and motorsport Chief Norbert Haug.
"I had no problems with Nico," he said in an interview with a German motorsport magazine.
"But I told Norbert and Ross that it was time to find explanations."
"The fastest driver is a reference for the other one," Schumacher went on to explain. "You see the data of how he drives, but it didn't work quite so well in the other car. Looking back, there were a few things (wrong) with my car.
"The exhaust got so hot that sometimes the underside of the car burnt or the F-Duct (a system to help the airflow) was triggered in parts of the track where it shouldn't have been.
"But I have not spoken publicly about them; I preferred to discuss it internally."
