Alonso qualified second in the wet on Saturday in Montreal but in the race he slipped back to seventh on the road behind teammate Esteban Ocon.
Szafnauer believes that had Alonso not been hit by the issue, which compromised his straight-line performance from around Lap 20, he could have fought with Lewis Hamilton and George Russell for a place on the podium.
Alonso also lost out by making his first pitstop under green flag conditions, having just missed the pit entry when a VSC came out and gave several rivals a cheap stop.
In the latter part of the race, Alonso found himself behind Ocon, who helped him gain DRS to stay ahead of the pursuing Alfa Romeo of Valtteri Bottas. Although Alonso kept the Alfa driver behind, he was called to the stewards for weaving in front of the Finn, and was dropped back to ninth in the final results with a time penalty.
“Good points, but without the safety cars, I think it could have been a little bit better,” said Szafnauer. “The pace of the car in the wet was good. The pace of the car in the dry, we thought we would be not as fast as the Ferraris and Red Bulls, but about as fast as the Mercedes.
“And as it turned out, the Mercedes got us because of some circumstance. But in the championship overall, we’re not going to beat them, we have to be realistic, we’re not going to finish third.
“So with those that we’re fighting for fourth, I’m really happy, we scored a lot of points.”
When asked about the power unit problem with Alonso, Szafnauer said: “We had a bit of an issue on Fernando’s car, which is why he finished behind Esteban.
“We don’t know what it is yet. But it looks like it was an air leak somewhere. But from where, I don’t know.
“That manifested itself in some higher temperatures, and then you had to manage, and so we were limited down the straight. Thank God it wasn’t big enough where we stopped.”
Fernando Alonso, Alpine A522
Photo by: Andy Hone / Motorsport Images
After the race, Alonso rued that the team’s problems always seem to afflict his car but Szafnauer downplayed his concerns.
“I’m not sure it always happens to him,” he said. “I’m sure it feels that way. But I’m not sure that’s right.”
In the closing laps Alonso was keen to get past Ocon, claiming that he had been “a hundred times faster” during the weekend.
Szafnauer said it was not hard for the team to make the call to ensure that the drivers held station: “I mean, we were fifth and sixth, right? So what do you…
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