Christian Horner has branded Renault’s power unit “undriveable” after a difficult Australian Grand Prix.
Red Bull’s Daniel Ricciardo finished a lapped sixth at the 2015 season opener, the best of the two Renault-powered cars to finish the race.
According to Horner, the Renault engine is badly down on power, and the Red Bull boss is concerned that the French firm seems to have taken a step back since the end of 2014.
“It’s been a very tough weekend for Renault,” Horner said. “We’re probably 100bhp down on Mercedes at the moment. The engine is just quite undriveable.
“You can see and hear that from the comments the drivers are making… you’re not able to drive the car properly.
“It’s frustrating that we’re effectively even further back than we were in Abu Dhabi in both power and driveability.
“Ferrari has made a good step. Renault, at this stage, appear to have made a retrograde step.”
Horner says it is imperative that Renault bounces back quickly after a tough opening round in Australia.
“It’s important after this weekend that we re-group with Renault and try and offer our support where we can, because they’re obviously in a bit of a mess at the moment,” he added.
“We need to understand things quickly. Across the four cars we have had two engine failures – one within five laps – and a whole bunch of reliability problems. It’s not the start Renault can afford to have.”
This article first appeared on Richland F1 – Image courtesy of Red Bull Content Pool