Lewis Hamilton does not expect to take an engine penalty at the Turkish Grand Prix this weekend.
Mercedes team principal Toto Wolff revealed that a fourth engine of the season could be fitted to Hamilton's car ahead of the race at Istanbul Park on Sunday.
That would take the championship leader over the permitted allowance and leave him starting at the back of the grid.
Hamilton does not envisage that happening this week but is not entirely ruling it out.
He said in a press conference on Thursday: "At the moment, I still have number two and three.
"So I don't envisage us having to take one at the moment, but that could change. Who knows?"
Hamilton leads Max Verstappen by only two points in a thrilling title battle and the 36-year-old says off-track interests help him to switch off as the pressure builds.
"I genuinely find it easy because I have these other outlets so I'm able to blow off steam in lots of different ways," Hamilton said.
"The most important thing is always to be able to come back into the racing environment fresh, recovered, positive and not really having any worries.
"So I think I’m able to arrive and just love doing my job. So we just take it one weekend at a time and one race at a time, just always trying to elevate.
"I've spent plenty of time speaking to the team about how we can advance and improve but I've been doing this a long time so I’ve found ways personally [of coping].
"What works for me personally won’t work for everyone but I've found a way that I know how I tick, what gets me on course and what can put me off course, so I stick to them."