Echoing the qualifying attempt of Vettel seven days ago ahead of the Austrian Grand Prix, Leclerc failed to escape Q2 for this weekend's Styrian Grand Prix at the Red Bull Ring, and will start the race from 11th, a place behind his team-mate.
"Unfortunately, we had the rain when we went on the second set [of extreme tyres], but anyway I think the main problem today, we were just not quick enough," Leclerc told Sky Sports F1.
"There was not much to do, we were 1.8 [seconds] off, and however we look at it, we are just too slow at the moment, so we need to work."
Vettel, who scraped into Q3 by 0.083s from Leclerc, was also left shaking his head with regard to the lack of pace from the SF1000.
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