Red Bull will sit down with Max Verstappen to go over what engine supplier Honda has done to ensure there is no repeat of the recent reliability problems.

Verstappen has been left frustrated after suffering two separate technical issues that forced him to retire at both Monza and Mugello.

At the Italian Grand Prix, Verstappen pulled into the garage when the team noticed something in the data, while at Mugello he lost power despite a initial good getaway that led to him being punted off on the first lap.

The reliability woes have lost the Dutchman significant ground in the world championship, now facing an 80-point deficit to Mercedes’ Lewis Hamilton with eight rounds remaining.

“Max’s frustration at another DNF is totally understandable,” Red Bull boss Christian Horner said in a column on the team’s website.

“From the very first lap in Mugello he was on it. We had a very fast car and some real progress has been made with the balance of the car.

“That is what was so galling for him. In the heat of the moment when you have gone from the adrenaline of the start to the disappointment of ending up in the gravel trap, it is only natural to vent on the radio.

“We really felt that in the race we could take the fight to Mercedes. He had done the hard work in beating Lewis [Hamilton] off the line and it was going to be game on, but of course that did not materialise.”

Horner said it will brief Verstappen on the work to resolve its technical gremlins before next week’s Russian Grand Prix.

“We will go through it with him prior to Sochi and discuss what has been done behind the scenes between Honda and the team to help so it is rectified for the next race,” he said.

Looking ahead to Sochi, Horner is expecting Mercedes to be clear favourites having won every race at the circuit since 2014, but believes Red Bull could put a “little bit of pressure” on its rivals.

“I expect Mercedes to be fired up and pretty dominant as it is their type of track,” Horner said. “But as we have seen this season tyre degradation is an interesting factor.

“They weren’t stretched last weekend, but you could hear how nervous they were, instructing their drivers to stay off the kerbs. So, it would be great if we can be competitive in Sochi and put them under a little bit of pressure, because that is when things can happen.

“Championship wise, we are very much outsiders now and every race is a cup final for us. We are just going to go for it as we have nothing to lose.”