The West London club feel they should not be in the Europa League after their stunning Champions League triumph last season.
After losing the first leg 1-0 in Bucharest, Chelsea needed to secure a win by two goals to go through to the quarter finals.
However, they dug themselves in a hole to climb out of, with some shocking defending. Steaua defender Vlad Chiriches poked home after the ball bounced around the penalty area.
Goals from Juan Mata, John Terry and Fernando Torres, who also missed a penalty, gave the Blues the 3-1 scoreline they needed to progress, but what exactly did we take from this enthralling encounter?
Let's find out, shall we?