Max Verstappen has implored Red Bull to investigate the "low grip" and lack of balance he experienced in his RB21 during FP1 and FP2 at the Hungarian Grand Prix.
The four-time F1 drivers' champion finished the first two hours of practice in ninth and P14, respectively, labelling it a "very tough" day at the Hungaroring.
It included a trip to the stewards for the Milton Keynes squad, being alleged to have sent him out on track with his car in an unsafe condition during the final Friday session.
Verstappen was seen throwing a towel away from the cockpit of his car, decisive action he defended as preventing a potentially "dangerous" situation.
The officials ultimately mitigated any potential punishment down to a warning, but it came as little consolation to the Dutchman.
"Yeah, today was very tough," the 65-time grand prix winner said after the second free practice session in Budapest.
"Just really low grip feeling and not really a balance in the car. It's even difficult to say what the exact problem is - nothing really works."
Whilst Red Bull underwhelming on a Friday is nothing new, and has even become a calling card of the team, Verstappen called for the team to look into its lack of performance overnight.
"This is something that we have to investigate overnight, because so far, of course, it hasn't been our weekend."
To make matters worse for the 27-year-old, he was outperformed by team-mate Yuki Tsunoda in FP2, a rarity, with the Japanese driver ending that session in ninth.
Also interesting:
Verstappen encounters bizarre towel trouble after McLaren near-miss
Join RacingNews365's Ian Parkes and Nick Golding, as they discuss a busy practice Friday at the Hungarian GP.
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