Max Verstappen says Red Bull are "already miles behind" after the reigning world champion suffered a second DNF of the 2022 Formula One season at the Australian Grand Prix.

The Dutchman had sat second throughout the race at Albert Park and had closed the gap on eventual race winner and championship rival Charles Leclerc amid a safety car deployment.

But a mechanical failure saw him forced to retire once again after he also failed to see out the season opener in Bahrain, with the Ferrari of Leclerc leading home from Verstappen's Red Bull team-mate Sergio Perez and Mercedes' George Russell.

It is the second time in three races Verstappen has been blighted by problems beyond his control, and he bemoaned that he cannot think about defending his crown right now.

"We're already miles behind," he stated. "I don't want to think about the title fight, I just want to finish races.

"It's frustrating and unacceptable. These kinds of things if you want to fight for the title cannot happen."

Team principal Christian Horner voiced his own disappointment to Sky Sports afterwards too, adding: "We don't know what the issue is yet. I don't think it is engine related.

"I think it might be a fuel issue but we need to get the car back and look at exactly what has happened.

"[It's] desperately frustrating. We didn't have the pace to race Charles today. They were in a league of their own but frustrating not to bag those points."

One beneficiary of Verstappen's exit was Mercedes' Lewis Hamilton, with the seven-time world champion completing a second-row lockout for the Silver Arrows after his struggles this year.

"We definitely didn't expect to be third and fourth," the Briton added to Sky Sports. "George did a great job today. We'll take these points and keep pushing.

"I couldn't fight for third as the engine kept overheating. I had to back off. We bagged as many points as we could for the team and that's great."