It is especially significant as Red Bull driver Max Verstappen won the world championship over Lewis Hamilton that year.
Mercedes beat Red Bull by two points, but they are still third in the standings after the distance to Ferrari grew by six points in Austria.
Toto Wolff's accusation that Red Bull is abusing the rules, according to Red Bull F1 boss Christian Horner, is "complete garbage" in the midst of the current flexi-floor crisis.
The incident took place just in front of a grandstand crowded with supporters of Max Verstappen, who was involved in a competitive title battle with Hamilton the previous year.
Mercedes were in contention for the victory at the British Grand Prix until their aspirations were dashed by an untimely Safety Car.
Bernie Ecclestone, a former head of Formula One, thinks Toto Wolff, the head of Mercedes, is "a bit fed up" with Lewis Hamilton.
The Mercedes technical director Mike Elliott is trying to temper expectations that it will soon begin competing with Red Bull and Ferrari.
At the Canadian Grand Prix, Mick Schumacher was seen casually strolling inside the Silver Arrows' garage, much to Toto Wolff's dismay.
The problem was severe on its vehicles that concerned the drivers about the physical discomfort prompted the FIA to intervene to aid.
Formula 1 technical heads will meet with the FIA before the British Grand Prix to try to find answers to the sport's porpoising crisis.