Stroll has endured a torrid time since the summer break, having not scored a point in the last five races and been knocked out of Q1 in qualifying for the last four events.
Speaking at the Qatar Grand Prix, Stroll suggested that some changes in the behaviour of the Aston Martin F1 car, especially the way the rear end appeared to be less settled than before, were not good for him.
Aston Martin team boss Mike Krack is aware of the difficulties that Stroll is facing, but said the team needed to be sure about exactly what the Canadian’s issues were before it could address them.
Asked to define what changes with the car Stroll was struggling with, Krack said: “I think we need to prove it first.
“The fact is that he has lost a bit of competitivity, and this is something we need to understand.
“We have suspicions and indications, and this is I think what Lance is referring to. But then we need to make the according changes and see, if this is confirmed, that if you improve that, he improves as well.”
Source: Autosport