Charles Leclerc believes an "engine problem" may have been a cause behind his poor Formula 1 qualifying performance for the Mexican Grand Prix.
Leclerc only managed seventh in Mexico - beaten by both teammate Carlos Sainz and even Valtteri Bottas in the Alfa Romeo.
The Mexico City qualifying session was Leclerc's worst since the Canadian GP weekend, where he did not compete due to power unit penalties.
It has been a difficult weekend for Leclerc - including a crash in FP2 on Friday - but the Monegasque wants Ferrari to investigate potential engine trouble.
Leclerc on engine trouble
"We need to look at it. I've been losing quite a lot of time down the straights in qualifying," he told Sky Sports F1.
"FP3 was not great so we need to look into it. We had loads of problems with the engine today for some reason, and I had very bad drivability in all the high-speed corners and the car was not really responding to what I was doing with the throttle.
"And then down the straights, we were so slow, so we'll look into it."
While ruling out altitude problems for the perceived problem, Leclerc was also downbeat at what could be achieved in the race.
"I don't really know," he said. "For now, I need to speak with the team to see what we can do for tomorrow but obviously we cannot change much so I'm not sure what we can do."
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