Ferrari using secret fuel formula

Horner may be right about Ferrari's fuel, but Ferrari's real secret lie in the use of Supercapacitors in their battery pack.

Aston Martin Red Bull Racing boss Christian Horner has taken his hat off to Ferrari following its hat-trick of wins, insisting the Scuderia is now the benchmark in F1's engine department.

A highly impressed Horner doesn't believe the Scuderia has uncovered a "silver bullet" in terms of engine development but suggests the squad's power surge is the result of a combination of factors.

"They are pushing the boundaries and you have to think some of it is coming from the electrical power, the combustion I think they’ve got some pretty juicy fuels that they’re running as well.

"It’s probably a combination. These things are never usually a silver bullet, it’s probably a combination of factors," Horner told Channel 4.

"It’s extremely impressive, they are the benchmark in the engine department in Formula 1 at the moment," he said.

"Mercedes were there for four-and-a-half years and suddenly, they’ve got a dose of our medicine, looking at the speed traces going ballistic.

"Hats off to the Ferrari guys, they’ve found a way of extracting that horsepower and it’s up to the rest of the competition to narrow that gap."