Bruno Senna pointed to a mistake on his final run as the cause of him failing to make Q3.
The Williams driver had shown greater competitiveness than recent races but qualified only thirteenth.
"I made a mistake on my lap which is disappointing because I would have been in the top 10 if that hadn’t happened. We showed good pace in this morning’s practice and in Q1 as well as a clear improvement over the last couple of races so things are going in the right direction", he said.
"We’ve been strong on our longer runs so hopefully I can make up some places tomorrow and get into the points".
Pastor Maldonado qualified in ninth place but also believes that more was possible.
"I made a small mistake on the final corner of my final lap which lost me quite a lot of time so I don’t think ninth is reflective of our true pace today", said the Venezuelan. "We were not as quick as we needed to be yesterday but we worked really hard to understand why and the car felt much better today. We’re back challenging in Q3 so there are lots of positives we can take from today’s qualifying, and our race pace seems to be competitive so I’m optimistic about my chances tomorrow".