Mark Webber on Saturday said he is worried Formula One could be falling into the pack.
The Australian repeated his 2010 pole position at the Circuit de Catalunya on Saturday, but he was a full second slower than he was for the quickest qualifying time a year ago.
But that is not the main concern; the degradation of the tyres supplied this year by Pirelli means that at the end of a long run, the pace can now be compared to the junior GP3 category.
"We need to be careful with our long run pace that we don't get too close to the other categories," said the Australian.
"I don't think the long runs are particularly impressive for a Formula One car round here," added Webber.
"If you look at a GP3 lap time, I think they did a 1:38 and some of my laps at the end of my long run (in practice) were in the 1:30s, and I think the budget's a little bit different," he said.
Agreed Lewis Hamilton: "Too slow at the moment, isn't it?"