It looks as though Helmut Marko is bothered by the FIA's lack of urgency in investigating Mercedes' flexible front wing.
Red Bull have never formally lodged a protest against the Silver Arrows, just as Mercedes have never officially protested again Red Bull's rear wing. Nevertheless, Marko wants to see progress made in the investigation given how quickly things proceeded when it came to questions surrounding the Red Bull car.
"When something is investigated at Mercedes' behest, it is always done with lightning speed," Marko told AvD Motor & Sport Magazin. "There have already been questions about our rear wing, our engine and our tyre pressure. All these question marks were placed on our car by Mercedes or Mercedes driven teams.
"We have certain concerns about Mercedes' front wing, which is clearly moving on our onboard footage. We are waiting for a response from the FIA. We demand clarification."
Red Bull have become embroiled in a battle on and off the track with Mercedes, something that doesn't surprise the Austrian.
"Off the track, it's all about exploiting the technical regulations completely to your advantage and letting the competitor get a bit of a setback from the FIA," Marko added.
On track, Marko has little to complain about as Max Verstappen finds himself 32 points ahead of Lewis Hamilton.
"We give our answers on the track," Marko added. "Verstappen could have easily won the race in Baku if it wasn't for a tyre blowout. However, it shows that Red Bull can triumph at any type of circuit."
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