Red Bull has struggled to find performance all weekend on the Marina Bay track, and after a set-up change made things worse for qualifying the Dutchman couldn’t better 11th place.
Speaking to his team as he drove back to the pitlane he said that the session had been “a shocking experience”.
He then faced investigations into three impeding incidents, including one in the pitlane, emerging with two reprimands but no grid penalties.
Verstappen made it clear that from 11th he doesn’t think he can win Sunday’s race.
"You can forget about that," he said when asked if he could fight for victory. "You can't pass. On other tracks you can start last, I mean probably in Spa you can start last and win the race, but not here.
"Here you need to be two or three seconds faster to have a chance to pass. And so that's just street circuit stuff."
Verstappen acknowledged that it was more important to understand why the team struggled in Singapore rather than worry about ending his winning streak.
"I knew that there was a day that you're not winning anymore," he said. "But also we had a really good run anyway, up until now.
"I would always take a season like we're winning this much and having one really bad weekend over the other way around, where you're not fighting for the championship, and then you're winning here.
Source: Autosport