Toto Wolff believes this season's title race between Mercedes and Ferrari so far has been "more exciting than ever".
Mercedes and Ferrari have shared the leader spot of the Constructors' Championship several times already this season.
The German team are currently ten points above the Italian team with Red Bull seemingly out of the picture, due to many reliability issues.
"The battle at the top is more exciting than ever before, and things are also very tight in the midfield," Mercedes boss Toto Wolff said to Motorsport Week.
"The races have not only produced some great wheel-to-wheel action on the track but also some surprise winners: seven out of the twelve races so far were not necessarily won by the fastest car.
"All in all, I would say that the 2018 season has been a marvellous advertisement for the sport. For us as a team, the half-term report is a positive one, as we are currently leading both world championships.
"We owe this to the efforts of our team in Brackley and Brixworth and to the driving skills of Lewis (Hamilton) and Valtteri (Bottas).
"At the same time, though, we also realise that we have dropped points in more than one race, so we are going flat out to boost performance even more for the second half of the season.
"We will come back refreshed with the necessary energy to raise our game even further in the second half of the season."