Drivers suffered in the heat and humidity in Losail, with most saying afterwards that it was the toughest race of their careers.
Logan Sargeant was not able to finish, while his Williams team-mate Alex Albon also sought medical treatment after the flag.
On the Monday after the race the FIA promised an investigation, noting of the drivers that “while being elite athletes, they should not be expected to compete under conditions that could jeopardise their health or safety.”
Next year’s Qatar event is scheduled for December 1, which should alleviate the heat issue.
However, Alonso says that there should be an option to run later in the day if necessary.
“It was a surprise, to be honest, because it was not that bad in free practice,” he said of Qatar race day. “Maybe it was windy or something and today we missed that wind or something, that ventilation.
“It was extreme. We need to see if in the future there is any solution, and in some extreme conditions we can agree on delaying the start or whatever.”
Source: Autosport