Vettel will start the race from last place after suffering a suspension failure during Q1 that meant he was unable to set a competitive time.

Although teammate Kimi Raikkonen, who had been quicker than Vettel all weekend, qualified in fifth, the German reckons the top four spots were possible.

"It's a big shame. I think the car was good enough to put it on the first four," said Vettel.

"It was quite obvious to see that going around on three wheels doesn't really work."

Vettel said he completed two laps with the broken anti-roll bar as he had no time to fix.

"There was no time to fix it. I wanted to come in but we decided to stay out and then we came in because it was just hopeless. There was no time to fix the problem."

The Ferrari driver insists he could still secure a positive result tomorrow thanks to the safety car, a common feature in the Singapore Grand Prix.

"We have a lot of tyres, so that's an advantage. It's bad to start from the back. Nevertheless, with the safety car and so on you can always come back."