Mercedes says it would probably have quit Formula 1 if the sport had not adopted its new turbo hybrid engines.
Professor Dr Thomas Weber, the Daimler board member responsible for research and development, said the engines provided the justification to continue.
“The key challenge for the future is fuel economy and efficiency and with the change in regulations F1 is the spearhead for development,” Weber said.
He said it had become “hard to explain” why F1 was using the old V8 engines.
The sport switched this year to 1.6-litre turbo hybrid engines, replacing naturally aspirated V8s. Mercedes have dominated so far, with Lewis Hamilton winning two of the first three races and team-mate Nico Rosberg the other.
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