“The balance of the car was pretty awful on that first stint," Hamilton said to Sky Sports.
"A lot of understeer to snap oversteer, through corner balance and I just couldn’t keep up with them. So then, bit by bit as we got through the next couple of stints, the car started to become more driveable.
“The last stint was much better, if we had the pace we had at the end, we would've been a bit better through the day.
“We have a lot of work to do. We’re a long way off beating Red Bull in a race and obviously, now we’re behind the McLarens. We’ve just got to keep pushing.”
Wolff though believed that it was Mercedes who were now the chief challengers to Red Bull after their car showed excellent pace once their cars could run at lower fuel.
"I think we had the second-quickest car today," Wolff said to Ted Kravitz. "If you look at the lap time profile, also where George came from, but we just didn’t monetise on it.
"But having said that, you see where Verstappen is doing his laps, tranquil, and that needs to be the target – and that’s far off at the moment.
"The start certainly played a role, but that can happen. It was maybe also we brought the tyres in very carefully, maybe too careful, and you can see the lap time difference towards the end,
"I think we reeled in maybe 15 seconds – something around that. We were missing at the end 1.9s to Perez and just four seconds to Lando, or less, and I think we had that."