Toto Wolff has admitted to mixed feelings about 2017.
Next year will see a huge regulation overhaul that will bring major aerodynamic changes that Wolff thinks will bring an "impressive" boost in lap times.
However, he fears that the quicker cars will come at the expense of wheel-to-wheel racing.
"For now, I see the data and it's true that it is impressive," he told the French newspaper Le Figaro.
"I can't tell you what the gain will be per lap but we can talk about several seconds. We will see really tired drivers on the podium after the races.
"The only thing that gives me pause is that this extra G-force will not be seen on the TV. And it may become more difficult to follow the other cars because the air behind becomes more and more unstable," Wolff added.
He is also worried that the 2017 rules could bring an end to Mercedes' three years of dominance in Formula One.
"I worry about this at every race," said Wolff. "I always fear that our performance will not be enough, but on the other hand I have absolute confidence in my team to meet this challenge with success."
Bahrain International Circuit - Winter testing
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