World champion Lewis Hamilton was left dismayed as engine problems forced him to settle for third on the grid for Sunday's Monaco Grand Prix.
Fuel pressure and temperature issues hampered the performance of the British driver's Mercedes in qualifying, with team-mate Nico Rosberg taking full advantage to claim second behind Red Bull's Daniel Ricciardo, who produced a superb drive to claim pole.
The engine problem means that Hamilton will have it all to do on a track where overtaking is difficult and he cut a despondent figure at the post-qualifying press conference.
"It was a difficult qualifying," he said.
"I don't really know what to say at the moment, but the good thing is I did get out to do a lap at least.
"It was as bad as some of the races have been in the respect of the engine problems, so I'm grateful to be up in third.
"Pole was there for the taking, but I will do what I can in the race to salvage what I can from Saturday's result."
Rosberg, meanwhile, refused to make excuses for conceding pole to Ricciardo, insisting that the Australian had simply been quicker on the day.
"I don't think it got away from me it just never was with me because Daniel was just quick," he said.
"They [Red Bull] got a well-deserved pole and I wasn't quick enough."
The Ferraris of Sebastian Vettel and Kimi Raikkonen will start from fourth and sixth respectively, split by the Force India of Nico Hulkenberg.