Toto's excited to return to Spielberg for his home race and expects qualifying to be crucial for the Austrian GP, as the Red Bull Ring is a tricky track for overtaking.
"We're going to Austria leading both the Constructors' and the Drivers' Championships, but we know that we will once again need to get every detail right if we want a chance to win the race," he explained.
"And, in Valtteri's case in particular, he needs luck to go his way a little more than we have seen in recent races, because he hasn't had the results that his performances should have earned.
"The relatively short lap in Austria makes the circuit challenging as it closes up the field in qualifying and will make the margins even tighter.
"We will aim to hit the ground running as qualifying is particularly important. This is because overtaking has historically been tricky despite the long straights - although we need to wait and see if that changes this year with an additional DRS zone.
"Personally, I'm looking forward to returning to Spielberg. The track holds a very special place in my heart as I did my first laps at the old Österreichring when I was young.
"After Formula One returned to the track in 2014, it quickly became one of the favourite places of the entire F1 calendar, not the least thanks to the upgraded facilities and the excellent organisation of the event."