After five grands prix so far this season McLaren has not been within touching distance of the podium, never mind its top step, with Jenson Button's fifth place in China the team's best result.
Work continues on a car slowly clawing its way to respectability, but still lacking in outright pace compared to their rivals, as proven in Spain 11 days ago when Button and Perez could only finish eighth and ninth respectively.
Such a scenario is not expected to change this weekend in Monaco and the bumpy Monte-Carlo street circuit where McLaren's ride-height woes could hinder them further.
Beyond that, however, Perez feels with the effort being put in behind the scenes, it is only a matter of time before McLaren savour victory again.
"We'll win, definitely. That's the target for us - to win a race or a couple of races this season," said Perez.
"We know at the moment there is no chance, but it is very encouraging for myself to see how hard everyone is pushing back at home.
"No-one in the team is giving up, even though we're not in a position we would like to be, knowing we can't fight for race victories. It's not easy.
"But the team aren't giving up and I am sure we will win some races this year."
Although unable to pinpoint when he or Button will take the chequered flag, Perez is at least hoping that come the British Grand Prix at the end of next month, they will be knocking on the door of a podium.
Perez added: "In Barcelona we were massively far away, which was very disappointing.
"You never know, but I expect it to be a couple of races for us to turn everything around.
"By the British GP would be a good turnaround, though it's difficult to say we are going to be on the podium there.
"At the moment, where we are, we look very far away, but McLaren is a great team working flat out, so if we could be on the podium there we can win some races after that."
McLaren sporting director Sam Michael, however, was cautious in sharing Perez's confidence.
"It's great he is optimistic, especially as he is the guy driving the car," said Michael.
"Ultimately we still have a lot of work to do, and how long it will take us to get there I can't really predict."
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