Red Bull Racing have apologised to Sebastian Vettel after yet another mechanical failure forced him out of the Monaco Grand Prix on Sunday.
The world champion has inherited several reliability failures in the opening six rounds of the season so far, with a turbo problem forcing him to retire from Sunday’s race after just six laps.
It was Vettel’s second retirement of the season, but his practice sessions have been plighted with car failures - including in Spain where he lost all but four laps of running on Friday.
Vettel made a great start in Monaco, leap-frogging his slow starting team-mate Daniel Ricciardo to take third place behind the Mercedes duo of Nico Rosberg and Lewis Hamilton.
A crash on the first lap brought out the safety car, but at the restart, Vettel’s car lost all power, forcing him back to the pits, before eventually retiring.
“It’s disappointing,” said Vettel after retiring in Monaco. “I had a good start and then we lost boost pressure from the turbo, so I had no power and had to retire.
“The team did everything they could.
“I felt quite helpless in the car, so I was asking for an answer of what we could do, but there wasn’t anything at that stage.”
“We will move forwards and it will be good for us soon.”
Team boss Christian Horner added: “We have to apologise to Sebastian for an issue with his power unit.
“It’s frustrating that, after making a good start, his race came to a very premature end.”