George Russell could face grid penalties later this season amid suggestions he will take a second power unit just four races into the season.
The British driver was forced to retire on lap 18 from the Australian Grand Prix, stopping on track as his Mercedes engine caught fire. It brought a premature end to what was shaping up to be a very strong weekend for Russell.
He qualified second behind only Max Verstappen. And he got the better of the Dutchman on the first lap and led for the opening stages of the race, until he was hampered by badly-timed red flag. He dropped down to seventh but had made his way back up to fourth before his enforced retirement.
