McLaren has been reprimanded by the stewards after a communication error led to Fernando Alonso's car being fitted with a tyre allocated to team-mate Jenson Button.
McLaren accepted blame and was handed a reprimand following a session in which both drivers were eliminated during the first knockout segment of qualifying for the British Grand Prix.
Alonso will start the race from 17th position as McLaren's struggles continue.
"I had a problem at the end of FP3 this morning," he said. "There was no clear resolution to the problem, but we found a suitable solution, and everything started working after we reset it.
"That meant I went into qualifying having done very few laps. I didn't start the session knowing enough about either the set-up or the conditions, but, given those limitations, I think we got the best from the car. I don’t think I could’ve gone much quicker than that today.
"We knew this race would be tough for us – as will fast circuits like Spa and Monza – but we all appreciate that this is a long-term project, and we’re definitely building for the future."
Button will line-up from 18th place on the grid.
"I’ve been struggling with the balance a little bit – hopefully we’ll learn a lot tomorrow, that’s all we can do, really," he said.
"Unfortunately, this is our situation right now – and it’s not easy for a team of this stature and experience."