Renault may not have the most powerful engine on the grid but, according to their F1 director, the company supplies teams with the most fuel efficient.
Having sold the final batch of shares in their F1 team to Genii Capital, Renault's role in Formula One is now solely as an engine supplier.
In that role the French company has excelled in recent seasons, winning back-to-back Championship doubles with Red Bull Racing in 2010 and 2011.
And, according to Jean François Caubet, Renault's F1 director, part of the secret to that success in their engine's fuel efficiency.
"The Mercedes engine is about 15hp more power than ours, so too does Ferrari offer more power," he told AS.
"But, as far as drivability and fuel economy go the Renault engine is out in front as we need less gas."
In fact, so much so that Caubet estimates that Red Bull Racing, the defending Champs, "can start races with 15 or 18 litres less fuel in the tank than their competition - and that makes the difference."
