Max Verstappen's lead over Lando Norris at the top of the drivers' standings was reduced after the Dutchman finished sixth - three places behind the McLaren star - while team-mate Sergio Perez came home eighth.
Monza was the latest in a worrying run of results in recent months for the defending constructors' champions, who now sit just eight points ahead of McLaren in the battle for the 2024 title.
Now, Marko is urging the FIA to take a closer look at the flexible front wing on both the McLaren and Mercedes cars.
Mercedes first introduced the so-called flexi-wing back in 2022, and is now seemingly reaping the benefits after securing three victories this season, the same number as McLaren.
Red Bull team principal Christian Horner has previously spoken on the issue, admitting that their rivals have held a significant advantage this season.