The car appears to be especially susceptible to changes in temperature. Lewis Hamilton was pleased with its balance in final practice at Albert Park, then failed to reach Q3 a few hours later.
“After FP3… he said that the car is the best in three years,” said Wolff. “He had so much rear downforce and he feels confident.
“We didn’t change the car a lot. The track temperature changed by five degrees, believe it or not, so that’s nothing, and the car transformed from something that was the best in three years to something that is undriveable.”
“We are looking at everything and there’s something which our technology is not showing us because this window of performance is so narrow where the aero works or it doesn’t,” he added. “The wind picked up in the afternoon, that plays a role but we haven’t really been able to pinpoint it.”
Wolff said Mercedes will have to sacrifice more of their race weekends in order to understand what they need to do to improve their car.
“We are coming to a point now that we probably need to experiment every single race, not only on Friday, because our performance seems to get worse throughout the weekend,” he said. “We are good on Friday and we are good in some of the sessions on Saturday but the more grip we have, the faster it goes, the more we reach the performance ceiling of the car. And our data shows us it’s not the ceiling.”