With the first two races of the season concluded, McLaren-Honda have showed that they have improved from their torrid 2015 season, where they suffered a total of 15 retirements.
Already being forced to retire twice this season already, with Fernando Alonso being involved in a horrific crash at the Australian GP and Jenson Button having an engine failure at the Bahrain GP, Boullier notes that the car's performance has improved despite those issues.
"While we definitely saw a reassuring improvement in our performance in Bahrain," the McLaren racing director said.
"We cannot take anything for granted, and it’s imperative that we don't waste opportunities to score valuable points due to lack of reliability, as we saw at the last race.
"At the very least, we must learn from every situation, and in the case of Jenson’s power unit issue, we've done so, so we go to China with continued optimism that we can try to maximise the potential of our package."
Button and Alonso are both on their second engine as the they approach the Chinese Grand Prix.