That is despite the teenager being voted driver of the day for his drive to third.
"I think I was racing him side-by-side, he saw me, I still had a little bit of my nose ahead," Vettel said after the race. "He was much faster so it was about the corner where you get past. I don’t think it was correct."
Vettel finished the Grand Prix in fifth place, a result he was pleased with after spinning early in the race.
"Obviously it was not ideal in the first part to spin," he said. “I had some aquaplaning but I wasn’t the only one. I think it was a good recovery in the end, difficult to come back. I struggled to get past Carlos, I don’t know why it took a lot of laps but by then it was too late."
"It could have been anything today. I wasn’t the only one to get caught out by the aquaplaning but luckily I didn’t crash."
Bahrain International Circuit - Winter testing